1252698738 has 16 divisors (see below), whose sum is σ = 2547862560. Its totient is φ = 410488736.

The previous prime is 1252698721. The next prime is 1252698739. The reversal of 1252698738 is 8378962521.

It is not an unprimeable number, because it can be changed into a prime (1252698739) 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, 1768995 + ... + 1769702.

It is an arithmetic number, because the mean of its divisors is an integer number (159241410).

Almost surely, 2^1252698738 is an apocalyptic number.

1252698738 is an abundant number, since it is smaller than the sum of its proper divisors (1295163822).

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

1252698738 is a wasteful number, since it uses less digits than its factorization.

1252698738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3538761.

The product of its digits is 1451520, while the sum is 51.

The square root of 1252698738 is about 35393.4844003808. The cubic root of 1252698738 is about 1077.9920217455.

The spelling of 1252698738 in words is "one billion, two hundred fifty-two million, six hundred ninety-eight thousand, seven hundred thirty-eight".