1681512998 has 32 divisors (see below), whose sum is σ = 2786074272. Its totient is φ = 754790400.

The previous prime is 1681512961. The next prime is 1681513037. The reversal of 1681512998 is 8992151861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 777038 + ... + 779198.

It is an arithmetic number, because the mean of its divisors is an integer number (87064821).

Almost surely, 2^1681512998 is an apocalyptic number.

1681512998 is a deficient number, since it is larger than the sum of its proper divisors (1104561274).

1681512998 is a wasteful number, since it uses less digits than its factorization.

1681512998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600.

The product of its digits is 311040, while the sum is 50.

The square root of 1681512998 is about 41006.2555959454. The cubic root of 1681512998 is about 1189.1411541897.

The spelling of 1681512998 in words is "one billion, six hundred eighty-one million, five hundred twelve thousand, nine hundred ninety-eight".