158890769 has 8 divisors (see below), whose sum is σ = 161389800. Its totient is φ = 156411136.

The previous prime is 158890759. The next prime is 158890783. The reversal of 158890769 is 967098851.

158890769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2140369 + 156750400 = 1463^2 + 12520^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158890769 is a prime.

It is a super-2 number, since 2×158890769² = 50492552946822722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 158890769.

It is not an unprimeable number, because it can be changed into a prime (158890759) 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, 12119 + ... + 21555.

It is an arithmetic number, because the mean of its divisors is an integer number (20173725).

Almost surely, 2^158890769 is an apocalyptic number.

It is an amenable number.

158890769 is a deficient number, since it is larger than the sum of its proper divisors (2499031).

158890769 is a wasteful number, since it uses less digits than its factorization.

158890769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9699.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The square root of 158890769 is about 12605.1881778893. The cubic root of 158890769 is about 541.6260645648.

The spelling of 158890769 in words is "one hundred fifty-eight million, eight hundred ninety thousand, seven hundred sixty-nine".