1987056998 has 8 divisors (see below), whose sum is σ = 2999570592. Its totient is φ = 987200136.

The previous prime is 1987056959. The next prime is 1987057043. The reversal of 1987056998 is 8996507891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1987056998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3163790 + ... + 3164417.

It is an arithmetic number, because the mean of its divisors is an integer number (374946324).

Almost surely, 2^1987056998 is an apocalyptic number.

1987056998 is a deficient number, since it is larger than the sum of its proper divisors (1012513594).

1987056998 is a wasteful number, since it uses less digits than its factorization.

1987056998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6328366.

The product of its (nonzero) digits is 9797760, while the sum is 62.

The square root of 1987056998 is about 44576.4175097102. The cubic root of 1987056998 is about 1257.1973057352.

The spelling of 1987056998 in words is "one billion, nine hundred eighty-seven million, fifty-six thousand, nine hundred ninety-eight".