1375137642 has 16 divisors (see below), whose sum is σ = 2751315840. Its totient is φ = 458205792.

The previous prime is 1375137641. The next prime is 1375137661. The reversal of 1375137642 is 2467315731.

It is a self number, because there is not a number n which added to its sum of digits gives 1375137642.

It is not an unprimeable number, because it can be changed into a prime (1375137641) 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, 25618 + ... + 58365.

It is an arithmetic number, because the mean of its divisors is an integer number (171957240).

Almost surely, 2^1375137642 is an apocalyptic number.

1375137642 is an abundant number, since it is smaller than the sum of its proper divisors (1376178198).

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

1375137642 is a wasteful number, since it uses less digits than its factorization.

1375137642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86717.

The product of its digits is 105840, while the sum is 39.

The square root of 1375137642 is about 37082.8483533830. The cubic root of 1375137642 is about 1112.0271486609.

The spelling of 1375137642 in words is "one billion, three hundred seventy-five million, one hundred thirty-seven thousand, six hundred forty-two".