1051491312 has 60 divisors (see below), whose sum is σ = 3097603080. Its totient is φ = 332049024.

The previous prime is 1051491307. The next prime is 1051491313. The reversal of 1051491312 is 2131941501.

It is a happy number.

1051491312 is a `hidden beast` number, since 10 + 514 + 9 + 131 + 2 = 666.

It is a super-2 number, since 2×1051491312² = 2211267958422962688, 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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189423 + ... + 194894.

It is an arithmetic number, because the mean of its divisors is an integer number (51626718).

Almost surely, 2^1051491312 is an apocalyptic number.

1051491312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1051491312 is an abundant number, since it is smaller than the sum of its proper divisors (2046111768).

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

1051491312 is a wasteful number, since it uses less digits than its factorization.

1051491312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384350 (or 384341 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1051491312 is about 32426.7067708085. The cubic root of 1051491312 is about 1016.8773241284.

The spelling of 1051491312 in words is "one billion, fifty-one million, four hundred ninety-one thousand, three hundred twelve".