15161949 has 12 divisors (see below), whose sum is σ = 23891712. Its totient is φ = 9189000.

The previous prime is 15161947. The next prime is 15161957. The reversal of 15161949 is 94916151.

It is not a de Polignac number, because 15161949 - 2¹ = 15161947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15161947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76477 + ... + 76674.

It is an arithmetic number, because the mean of its divisors is an integer number (1990976).

Almost surely, 2^15161949 is an apocalyptic number.

It is an amenable number.

15161949 is a deficient number, since it is larger than the sum of its proper divisors (8729763).

15161949 is a wasteful number, since it uses less digits than its factorization.

15161949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153168 (or 153165 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 15161949 is about 3893.8347422560. The cubic root of 15161949 is about 247.5055890994.

It can be divided in two parts, 15161 and 949, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 15161949 in words is "fifteen million, one hundred sixty-one thousand, nine hundred forty-nine".