151739989 has 4 divisors (see below), whose sum is σ = 151765056. Its totient is φ = 151714924.

The previous prime is 151739983. The next prime is 151740031. The reversal of 151739989 is 989937151.

It is a happy number.

151739989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 151739989 - 2⁵ = 151739957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151739983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2802 + ... + 17644.

It is an arithmetic number, because the mean of its divisors is an integer number (37941264).

Almost surely, 2^151739989 is an apocalyptic number.

It is an amenable number.

151739989 is a deficient number, since it is larger than the sum of its proper divisors (25067).

151739989 is a wasteful number, since it uses less digits than its factorization.

151739989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25066.

The product of its digits is 612360, while the sum is 52.

The square root of 151739989 is about 12318.2786540977. The cubic root of 151739989 is about 533.3758517752.

The spelling of 151739989 in words is "one hundred fifty-one million, seven hundred thirty-nine thousand, nine hundred eighty-nine".