1405130381 has 4 divisors (see below), whose sum is σ = 1405617312. Its totient is φ = 1404643452.

The previous prime is 1405130369. The next prime is 1405130387. The reversal of 1405130381 is 1830315041.

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: 1830315041 = 1741 ⋅1051301.

It is a cyclic number.

It is not a de Polignac number, because 1405130381 - 2⁶ = 1405130317 is a prime.

It is a super-2 number, since 2×1405130381² = 3948782775218410322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1405130381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405130387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239111 + ... + 244916.

It is an arithmetic number, because the mean of its divisors is an integer number (351404328).

Almost surely, 2^1405130381 is an apocalyptic number.

It is an amenable number.

1405130381 is a deficient number, since it is larger than the sum of its proper divisors (486931).

1405130381 is an equidigital number, since it uses as much as digits as its factorization.

1405130381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486930.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1405130381 is about 37485.0687741132. The cubic root of 1405130381 is about 1120.0537763826.

The spelling of 1405130381 in words is "one billion, four hundred five million, one hundred thirty thousand, three hundred eighty-one".