100156993 has 8 divisors (see below), whose sum is σ = 100857600. Its totient is φ = 99459360.

The previous prime is 100156963. The next prime is 100157011. The reversal of 100156993 is 399651001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100156993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100156913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162021 + ... + 162637.

It is an arithmetic number, because the mean of its divisors is an integer number (12607200).

Almost surely, 2^100156993 is an apocalyptic number.

It is an amenable number.

100156993 is a deficient number, since it is larger than the sum of its proper divisors (700607).

100156993 is an equidigital number, since it uses as much as digits as its factorization.

100156993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 100156993 is about 10007.8465715657. The cubic root of 100156993 is about 464.4016553458.

The spelling of 100156993 in words is "one hundred million, one hundred fifty-six thousand, nine hundred ninety-three".