1002731994 has 32 divisors (see below), whose sum is σ = 2430866880. Its totient is φ = 303858000.

The previous prime is 1002731987. The next prime is 1002732013. The reversal of 1002731994 is 4991372001.

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, 843457 + ... + 844644.

It is an arithmetic number, because the mean of its divisors is an integer number (75964590).

Almost surely, 2^1002731994 is an apocalyptic number.

1002731994 is an abundant number, since it is smaller than the sum of its proper divisors (1428134886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1002731994 is a wasteful number, since it uses less digits than its factorization.

1002731994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688123 (or 1688117 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1002731994 is about 31665.9437566607. The cubic root of 1002731994 is about 1000.9098366129.

The spelling of 1002731994 in words is "one billion, two million, seven hundred thirty-one thousand, nine hundred ninety-four".