1051981268 has 24 divisors (see below), whose sum is σ = 2068781568. Its totient is φ = 464419296.

The previous prime is 1051981241. The next prime is 1051981289. The reversal of 1051981268 is 8621891501.

It is a super-2 number, since 2×1051981268² = 2213329176445775648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438596 + ... + 440987.

It is an arithmetic number, because the mean of its divisors is an integer number (86199232).

Almost surely, 2^1051981268 is an apocalyptic number.

It is an amenable number.

1051981268 is a deficient number, since it is larger than the sum of its proper divisors (1016800300).

1051981268 is a wasteful number, since it uses less digits than its factorization.

1051981268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879623 (or 879621 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 41.

The square root of 1051981268 is about 32434.2607130176. The cubic root of 1051981268 is about 1017.0352419909.

The spelling of 1051981268 in words is "one billion, fifty-one million, nine hundred eighty-one thousand, two hundred sixty-eight".