1974664747 has 16 divisors (see below), whose sum is σ = 2251941120. Its totient is φ = 1713967200.

The previous prime is 1974664697. The next prime is 1974664759. The reversal of 1974664747 is 7474664791.

It is not a de Polignac number, because 1974664747 - 2¹¹ = 1974662699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1974664847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137629 + ... + 151297.

It is an arithmetic number, because the mean of its divisors is an integer number (140746320).

Almost surely, 2^1974664747 is an apocalyptic number.

1974664747 is a deficient number, since it is larger than the sum of its proper divisors (277276373).

1974664747 is a wasteful number, since it uses less digits than its factorization.

1974664747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14274.

The product of its digits is 7112448, while the sum is 55.

The square root of 1974664747 is about 44437.2000355558. The cubic root of 1974664747 is about 1254.5783564750.

The spelling of 1974664747 in words is "one billion, nine hundred seventy-four million, six hundred sixty-four thousand, seven hundred forty-seven".