1541261381 has 16 divisors (see below), whose sum is σ = 1768955328. Its totient is φ = 1330012800.

The previous prime is 1541261377. The next prime is 1541261383. The reversal of 1541261381 is 1831621451.

It is a cyclic number.

It is not a de Polignac number, because 1541261381 - 2² = 1541261377 is a prime.

It is a super-2 number, since 2×1541261381² = 4750973289124054322, 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 (1541261383) 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 15 ways as a sum of consecutive naturals, for example, 29495 + ... + 62868.

It is an arithmetic number, because the mean of its divisors is an integer number (110559708).

Almost surely, 2^1541261381 is an apocalyptic number.

1541261381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1541261381 is a deficient number, since it is larger than the sum of its proper divisors (227693947).

1541261381 is a wasteful number, since it uses less digits than its factorization.

1541261381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92452.

The product of its digits is 5760, while the sum is 32.

The square root of 1541261381 is about 39258.9019331922. The cubic root of 1541261381 is about 1155.1155549885.

The spelling of 1541261381 in words is "one billion, five hundred forty-one million, two hundred sixty-one thousand, three hundred eighty-one".