1257480718 has 32 divisors (see below), whose sum is σ = 2186110080. Its totient is φ = 537269760.

The previous prime is 1257480677. The next prime is 1257480727. The reversal of 1257480718 is 8170847521.

It is a super-2 number, since 2×1257480718² = 3162515512283591048, 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 15 ways as a sum of consecutive naturals, for example, 3643 + ... + 50281.

It is an arithmetic number, because the mean of its divisors is an integer number (68315940).

Almost surely, 2^1257480718 is an apocalyptic number.

1257480718 is a deficient number, since it is larger than the sum of its proper divisors (928629362).

1257480718 is a wasteful number, since it uses less digits than its factorization.

1257480718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46732.

The product of its (nonzero) digits is 125440, while the sum is 43.

The square root of 1257480718 is about 35460.9745776960. The cubic root of 1257480718 is about 1079.3619682516.

The spelling of 1257480718 in words is "one billion, two hundred fifty-seven million, four hundred eighty thousand, seven hundred eighteen".