1976534564 has 6 divisors (see below), whose sum is σ = 3458935494. Its totient is φ = 988267280.

The previous prime is 1976534557. The next prime is 1976534579. The reversal of 1976534564 is 4654356791.

It can be written as a sum of positive squares in only one way, i.e., 1904624164 + 71910400 = 43642^2 + 8480^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247066817 + ... + 247066824.

It is an arithmetic number, because the mean of its divisors is an integer number (576489249).

Almost surely, 2^1976534564 is an apocalyptic number.

It is an amenable number.

1976534564 is a deficient number, since it is larger than the sum of its proper divisors (1482400930).

1976534564 is a wasteful number, since it uses less digits than its factorization.

1976534564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494133645 (or 494133643 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 50.

The square root of 1976534564 is about 44458.2339280363. The cubic root of 1976534564 is about 1254.9742197738.

The spelling of 1976534564 in words is "one billion, nine hundred seventy-six million, five hundred thirty-four thousand, five hundred sixty-four".