1051891270 has 16 divisors (see below), whose sum is σ = 1920073248. Its totient is φ = 414830080.

The previous prime is 1051891231. The next prime is 1051891283. The reversal of 1051891270 is 721981501.

It is a happy number.

It is a super-2 number, since 2×1051891270² = 2212950487804425800, 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, 740059 + ... + 741478.

It is an arithmetic number, because the mean of its divisors is an integer number (120004578).

Almost surely, 2^1051891270 is an apocalyptic number.

1051891270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1051891270 is a deficient number, since it is larger than the sum of its proper divisors (868181978).

1051891270 is a wasteful number, since it uses less digits than its factorization.

1051891270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481615.

The product of its (nonzero) digits is 5040, while the sum is 34.

The square root of 1051891270 is about 32432.8732923865. The cubic root of 1051891270 is about 1017.0062383857.

The spelling of 1051891270 in words is "one billion, fifty-one million, eight hundred ninety-one thousand, two hundred seventy".