1993411357 has 16 divisors (see below), whose sum is σ = 2391010560. Its totient is φ = 1624879872.

The previous prime is 1993411351. The next prime is 1993411451. The reversal of 1993411357 is 7531143991.

It is a de Polignac number, because none of the positive numbers 2^k-1993411357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993411351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7932 + ... + 63637.

It is an arithmetic number, because the mean of its divisors is an integer number (149438160).

Almost surely, 2^1993411357 is an apocalyptic number.

It is an amenable number.

1993411357 is a deficient number, since it is larger than the sum of its proper divisors (397599203).

1993411357 is a wasteful number, since it uses less digits than its factorization.

1993411357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71772.

The product of its digits is 102060, while the sum is 43.

The square root of 1993411357 is about 44647.6355141009. The cubic root of 1993411357 is about 1258.5359995115.

The spelling of 1993411357 in words is "one billion, nine hundred ninety-three million, four hundred eleven thousand, three hundred fifty-seven".