1051491318 has 16 divisors (see below), whose sum is σ = 2104977456. Its totient is φ = 350164640.

The previous prime is 1051491317. The next prime is 1051491319. The reversal of 1051491318 is 8131941501.

It is an interprime number because it is at equal distance from previous prime (1051491317) and next prime (1051491319).

It is a super-2 number, since 2×1051491318² = 2211267983658754248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051491313) 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, 76221 + ... + 88952.

It is an arithmetic number, because the mean of its divisors is an integer number (131561091).

Almost surely, 2^1051491318 is an apocalyptic number.

1051491318 is an abundant number, since it is smaller than the sum of its proper divisors (1053486138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1051491318 is a wasteful number, since it uses less digits than its factorization.

1051491318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166239.

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 1051491318 is about 32426.7068633249. The cubic root of 1051491318 is about 1016.8773260625.

The spelling of 1051491318 in words is "one billion, fifty-one million, four hundred ninety-one thousand, three hundred eighteen".