1046261381 has 4 divisors (see below), whose sum is σ = 1141376064. Its totient is φ = 951146700.

The previous prime is 1046261371. The next prime is 1046261389. The reversal of 1046261381 is 1831626401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1831626401 = 11 ⋅166511491.

It is a cyclic number.

It is not a de Polignac number, because 1046261381 - 2⁶ = 1046261317 is a prime.

It is a super-2 number, since 2×1046261381² = 2189325754744054322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1046261389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47557325 + ... + 47557346.

It is an arithmetic number, because the mean of its divisors is an integer number (285344016).

Almost surely, 2^1046261381 is an apocalyptic number.

1046261381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1046261381 is a deficient number, since it is larger than the sum of its proper divisors (95114683).

1046261381 is an equidigital number, since it uses as much as digits as its factorization.

1046261381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95114682.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1046261381 is about 32345.9639058724. The cubic root of 1046261381 is about 1015.1885988284.

Adding to 1046261381 its reverse (1831626401), we get a palindrome (2877887782).

The spelling of 1046261381 in words is "one billion, forty-six million, two hundred sixty-one thousand, three hundred eighty-one".