15149863 has 2 divisors, whose sum is σ = 15149864. Its totient is φ = 15149862.

The previous prime is 15149837. The next prime is 15149867. The reversal of 15149863 is 36894151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15149863 - 2⁵ = 15149831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15149867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7574931 + 7574932.

It is an arithmetic number, because the mean of its divisors is an integer number (7574932).

Almost surely, 2^15149863 is an apocalyptic number.

15149863 is a deficient number, since it is larger than the sum of its proper divisors (1).

15149863 is an equidigital number, since it uses as much as digits as its factorization.

15149863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 15149863 is about 3892.2824923173. The cubic root of 15149863 is about 247.4398071490.

It can be divided in two parts, 15 and 149863, that added together give a triangular number (149878 = T₅₄₇).

The spelling of 15149863 in words is "fifteen million, one hundred forty-nine thousand, eight hundred sixty-three".