5237891644 has 6 divisors (see below), whose sum is σ = 9166310384. Its totient is φ = 2618945820.

The previous prime is 5237891627. The next prime is 5237891653. The reversal of 5237891644 is 4461987325.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654736452 + ... + 654736459.

Almost surely, 2^5237891644 is an apocalyptic number.

It is an amenable number.

5237891644 is a deficient number, since it is larger than the sum of its proper divisors (3928418740).

5237891644 is a wasteful number, since it uses less digits than its factorization.

5237891644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309472915 (or 1309472913 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The square root of 5237891644 is about 72373.2799035666. The cubic root of 5237891644 is about 1736.6761361908.

The spelling of 5237891644 in words is "five billion, two hundred thirty-seven million, eight hundred ninety-one thousand, six hundred forty-four".