1989103402 has 32 divisors (see below), whose sum is σ = 3515218560. Its totient is φ = 832221120.

The previous prime is 1989103399. The next prime is 1989103421. The reversal of 1989103402 is 2043019891.

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, 92988 + ... + 112360.

It is an arithmetic number, because the mean of its divisors is an integer number (109850580).

Almost surely, 2^1989103402 is an apocalyptic number.

1989103402 is a deficient number, since it is larger than the sum of its proper divisors (1526115158).

1989103402 is a wasteful number, since it uses less digits than its factorization.

1989103402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19758.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1989103402 is about 44599.3654887600. The cubic root of 1989103402 is about 1257.6287395780.

The spelling of 1989103402 in words is "one billion, nine hundred eighty-nine million, one hundred three thousand, four hundred two".