1979810804 has 6 divisors (see below), whose sum is σ = 3464668914. Its totient is φ = 989905400.

The previous prime is 1979810801. The next prime is 1979810809. The reversal of 1979810804 is 4080189791.

It can be written as a sum of positive squares in only one way, i.e., 1633776400 + 346034404 = 40420^2 + 18602^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979810801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247476347 + ... + 247476354.

It is an arithmetic number, because the mean of its divisors is an integer number (577444819).

Almost surely, 2^1979810804 is an apocalyptic number.

It is an amenable number.

1979810804 is a deficient number, since it is larger than the sum of its proper divisors (1484858110).

1979810804 is a wasteful number, since it uses less digits than its factorization.

1979810804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494952705 (or 494952703 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 47.

The square root of 1979810804 is about 44495.0649398335. The cubic root of 1979810804 is about 1255.6672386147.

The spelling of 1979810804 in words is "one billion, nine hundred seventy-nine million, eight hundred ten thousand, eight hundred four".