1989604102436 has 12 divisors (see below), whose sum is σ = 3481910394480. Its totient is φ = 994772561160.

The previous prime is 1989604102417. The next prime is 1989604102471. The reversal of 1989604102436 is 6342014069891.

It is a super-2 number, since 2×1989604102436² (a number of 25 digits) contains 22 as substring.

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, 7220366 + ... + 7490853.

It is an arithmetic number, because the mean of its divisors is an integer number (290159199540).

Almost surely, 2^{1989604102436} is an apocalyptic number.

It is an amenable number.

1989604102436 is a deficient number, since it is larger than the sum of its proper divisors (1492306292044).

1989604102436 is a wasteful number, since it uses less digits than its factorization.

1989604102436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14745034 (or 14745032 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 1989604102436 in words is "one trillion, nine hundred eighty-nine billion, six hundred four million, one hundred two thousand, four hundred thirty-six".