153146993 has 2 divisors, whose sum is σ = 153146994. Its totient is φ = 153146992.

The previous prime is 153146989. The next prime is 153147053. The reversal of 153146993 is 399641351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152942689 + 204304 = 12367^2 + 452^2 .

It is a cyclic number.

It is not a de Polignac number, because 153146993 - 2² = 153146989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 153146993.

It is not a weakly prime, because it can be changed into another prime (153146923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76573496 + 76573497.

It is an arithmetic number, because the mean of its divisors is an integer number (76573497).

Almost surely, 2^153146993 is an apocalyptic number.

It is an amenable number.

153146993 is a deficient number, since it is larger than the sum of its proper divisors (1).

153146993 is an equidigital number, since it uses as much as digits as its factorization.

153146993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 41.

The square root of 153146993 is about 12375.2572902546. The cubic root of 153146993 is about 535.0193523730.

The spelling of 153146993 in words is "one hundred fifty-three million, one hundred forty-six thousand, nine hundred ninety-three".