1979787496 has 32 divisors (see below), whose sum is σ = 3938145480. Its totient is φ = 929843200.

The previous prime is 1979787473. The next prime is 1979787499. The reversal of 1979787496 is 6947879791.

It can be written as a sum of positive squares in 4 ways, for example, as 1731724996 + 248062500 = 41614^2 + 15750^2 .

It is not an unprimeable number, because it can be changed into a prime (1979787499) 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, 56886 + ... + 84826.

Almost surely, 2^1979787496 is an apocalyptic number.

It is an amenable number.

1979787496 is a deficient number, since it is larger than the sum of its proper divisors (1958357984).

1979787496 is a wasteful number, since it uses less digits than its factorization.

1979787496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28485 (or 28481 counting only the distinct ones).

The product of its digits is 48009024, while the sum is 67.

The square root of 1979787496 is about 44494.8030223755. The cubic root of 1979787496 is about 1255.6623110046.

The spelling of 1979787496 in words is "one billion, nine hundred seventy-nine million, seven hundred eighty-seven thousand, four hundred ninety-six".