1997059802 has 16 divisors (see below), whose sum is σ = 3211954560. Its totient is φ = 927895488.

The previous prime is 1997059783. The next prime is 1997059811. The reversal of 1997059802 is 2089507991.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369068 + ... + 374439.

It is an arithmetic number, because the mean of its divisors is an integer number (200747160).

Almost surely, 2^1997059802 is an apocalyptic number.

1997059802 is a deficient number, since it is larger than the sum of its proper divisors (1214894758).

1997059802 is a wasteful number, since it uses less digits than its factorization.

1997059802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743605.

The product of its (nonzero) digits is 408240, while the sum is 50.

The square root of 1997059802 is about 44688.4750467053. The cubic root of 1997059802 is about 1259.3033442079.

The spelling of 1997059802 in words is "one billion, nine hundred ninety-seven million, fifty-nine thousand, eight hundred two".