1993149356 has 24 divisors (see below), whose sum is σ = 3832489920. Its totient is φ = 899456400.

The previous prime is 1993149349. The next prime is 1993149391. The reversal of 1993149356 is 6539413991.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156830 + ... + 169061.

It is an arithmetic number, because the mean of its divisors is an integer number (159687080).

Almost surely, 2^1993149356 is an apocalyptic number.

It is an amenable number.

1993149356 is a deficient number, since it is larger than the sum of its proper divisors (1839340564).

1993149356 is a wasteful number, since it uses less digits than its factorization.

1993149356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326045 (or 326043 counting only the distinct ones).

The product of its digits is 787320, while the sum is 50.

The square root of 1993149356 is about 44644.7013205375. The cubic root of 1993149356 is about 1258.4808591719.

The spelling of 1993149356 in words is "one billion, nine hundred ninety-three million, one hundred forty-nine thousand, three hundred fifty-six".