13151993 has 8 divisors (see below), whose sum is σ = 13716480. Its totient is φ = 12594960.

The previous prime is 13151989. The next prime is 13152011. The reversal of 13151993 is 39915131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13151993 - 2² = 13151989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13151923) 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, 1898 + ... + 5468.

It is an arithmetic number, because the mean of its divisors is an integer number (1714560).

Almost surely, 2^13151993 is an apocalyptic number.

It is an amenable number.

13151993 is a deficient number, since it is larger than the sum of its proper divisors (564487).

13151993 is a wasteful number, since it uses less digits than its factorization.

13151993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3727.

The product of its digits is 3645, while the sum is 32.

The square root of 13151993 is about 3626.5676610261. The cubic root of 13151993 is about 236.0462958587.

The spelling of 13151993 in words is "thirteen million, one hundred fifty-one thousand, nine hundred ninety-three".