2173899512 has 8 divisors (see below), whose sum is σ = 4076061600. Its totient is φ = 1086949752.

The previous prime is 2173899509. The next prime is 2173899523. The reversal of 2173899512 is 2159983712.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135868712 + ... + 135868727.

It is an arithmetic number, because the mean of its divisors is an integer number (509507700).

Almost surely, 2^2173899512 is an apocalyptic number.

It is an amenable number.

2173899512 is a deficient number, since it is larger than the sum of its proper divisors (1902162088).

2173899512 is a wasteful number, since it uses less digits than its factorization.

2173899512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271737445 (or 271737441 counting only the distinct ones).

The product of its digits is 272160, while the sum is 47.

The square root of 2173899512 is about 46625.0953028517. The cubic root of 2173899512 is about 1295.4276275925.

The spelling of 2173899512 in words is "two billion, one hundred seventy-three million, eight hundred ninety-nine thousand, five hundred twelve".