15151989 has 8 divisors (see below), whose sum is σ = 20362240. Its totient is φ = 10021536.

The previous prime is 15151979. The next prime is 15152003. The reversal of 15151989 is 98915151.

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

It is not a de Polignac number, because 15151989 - 2⁵ = 15151957 is a prime.

It is a super-2 number, since 2×15151989² = 459165541312242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15151979) 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, 19504 + ... + 20265.

It is an arithmetic number, because the mean of its divisors is an integer number (2545280).

Almost surely, 2^15151989 is an apocalyptic number.

It is an amenable number.

15151989 is a deficient number, since it is larger than the sum of its proper divisors (5210251).

15151989 is a wasteful number, since it uses less digits than its factorization.

15151989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39899.

The product of its digits is 16200, while the sum is 39.

The square root of 15151989 is about 3892.5555872717. Note that the first 4 decimals coincide. The cubic root of 15151989 is about 247.4513811244.

The spelling of 15151989 in words is "fifteen million, one hundred fifty-one thousand, nine hundred eighty-nine".