15894091 has 2 divisors, whose sum is σ = 15894092. Its totient is φ = 15894090.

The previous prime is 15894083. The next prime is 15894097. The reversal of 15894091 is 19049851.

15894091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15894091 - 2³ = 15894083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15894091.

It is not a weakly prime, because it can be changed into another prime (15894097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7947045 + 7947046.

It is an arithmetic number, because the mean of its divisors is an integer number (7947046).

Almost surely, 2^15894091 is an apocalyptic number.

15894091 is a deficient number, since it is larger than the sum of its proper divisors (1).

15894091 is an equidigital number, since it uses as much as digits as its factorization.

15894091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 15894091 is about 3986.7393945429. The cubic root of 15894091 is about 251.4269912859.

It can be divided in two parts, 158 and 94091, that added together give a palindrome (94249).

The spelling of 15894091 in words is "fifteen million, eight hundred ninety-four thousand, ninety-one".