7437291648 has 64 divisors (see below), whose sum is σ = 20917401120. Its totient is φ = 2333265920.

The previous prime is 7437291557. The next prime is 7437291649. The reversal of 7437291648 is 8461927347.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 7437291648.

It is not an unprimeable number, because it can be changed into a prime (7437291649) 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, 563118 + ... + 576173.

Almost surely, 2^7437291648 is an apocalyptic number.

It is an amenable number.

7437291648 is an abundant number, since it is smaller than the sum of its proper divisors (13480109472).

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

7437291648 is a wasteful number, since it uses less digits than its factorization.

7437291648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139325 (or 1139313 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 51.

The square root of 7437291648 is about 86239.7335802935. The cubic root of 7437291648 is about 1951.9631028590.

The spelling of 7437291648 in words is "seven billion, four hundred thirty-seven million, two hundred ninety-one thousand, six hundred forty-eight".