1631064748 has 24 divisors (see below), whose sum is σ = 2959210800. Its totient is φ = 785698368.

The previous prime is 1631064739. The next prime is 1631064749. The reversal of 1631064748 is 8474601361.

It is a self number, because there is not a number n which added to its sum of digits gives 1631064748.

It is not an unprimeable number, because it can be changed into a prime (1631064749) 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, 39118 + ... + 69226.

It is an arithmetic number, because the mean of its divisors is an integer number (123300450).

Almost surely, 2^1631064748 is an apocalyptic number.

It is an amenable number.

1631064748 is a deficient number, since it is larger than the sum of its proper divisors (1328146052).

1631064748 is a wasteful number, since it uses less digits than its factorization.

1631064748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30609 (or 30607 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 1631064748 is about 40386.4426262081. The cubic root of 1631064748 is about 1177.1281180714.

The spelling of 1631064748 in words is "one billion, six hundred thirty-one million, sixty-four thousand, seven hundred forty-eight".