1257970616 has 32 divisors (see below), whose sum is σ = 2733626880. Its totient is φ = 531535200.

The previous prime is 1257970603. The next prime is 1257970619. The reversal of 1257970616 is 6160797521.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257970619) 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, 154220 + ... + 162171.

It is an arithmetic number, because the mean of its divisors is an integer number (85425840).

Almost surely, 2^1257970616 is an apocalyptic number.

It is an amenable number.

1257970616 is an abundant number, since it is smaller than the sum of its proper divisors (1475656264).

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

1257970616 is a wasteful number, since it uses less digits than its factorization.

1257970616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316475 (or 316471 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 1257970616 is about 35467.8814704233. The cubic root of 1257970616 is about 1079.5021184764.

The spelling of 1257970616 in words is "one billion, two hundred fifty-seven million, nine hundred seventy thousand, six hundred sixteen".