1889021672 has 16 divisors (see below), whose sum is σ = 3544326240. Its totient is φ = 943868016.

The previous prime is 1889021663. The next prime is 1889021681. The reversal of 1889021672 is 2761209881.

It is an interprime number because it is at equal distance from previous prime (1889021663) and next prime (1889021681).

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

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, 67748 + ... + 91475.

It is an arithmetic number, because the mean of its divisors is an integer number (221520390).

Almost surely, 2^1889021672 is an apocalyptic number.

It is an amenable number.

1889021672 is a deficient number, since it is larger than the sum of its proper divisors (1655304568).

1889021672 is a wasteful number, since it uses less digits than its factorization.

1889021672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160712 (or 160708 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 1889021672 is about 43462.8769411322. The cubic root of 1889021672 is about 1236.1722214400.

The spelling of 1889021672 in words is "one billion, eight hundred eighty-nine million, twenty-one thousand, six hundred seventy-two".