1040772381 has 8 divisors (see below), whose sum is σ = 1513850784. Its totient is φ = 630771120.

The previous prime is 1040772373. The next prime is 1040772389. The reversal of 1040772381 is 1832770401.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1040772373) and next prime (1040772389).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1040772381 - 2³ = 1040772373 is a prime.

It is a super-2 number, since 2×1040772381² = 2166414298104818322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 31538557 = 1040772381 / (1 + 0 + 4 + 0 + 7 + 7 + 2 + 3 + 8 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040772389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15769246 + ... + 15769311.

It is an arithmetic number, because the mean of its divisors is an integer number (189231348).

Almost surely, 2^1040772381 is an apocalyptic number.

1040772381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1040772381 is a deficient number, since it is larger than the sum of its proper divisors (473078403).

1040772381 is a wasteful number, since it uses less digits than its factorization.

1040772381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31538571.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 1040772381 is about 32261.0040296331. The cubic root of 1040772381 is about 1013.4101574830.

The spelling of 1040772381 in words is "one billion, forty million, seven hundred seventy-two thousand, three hundred eighty-one".