151493789 has 4 divisors (see below), whose sum is σ = 152834556. Its totient is φ = 150153024.

The previous prime is 151493779. The next prime is 151493803. The reversal of 151493789 is 987394151.

151493789 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.

It can be written as a sum of positive squares in 2 ways, for example, as 49140100 + 102353689 = 7010^2 + 10117^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151493789 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 (151493779) 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, 670214 + ... + 670439.

It is an arithmetic number, because the mean of its divisors is an integer number (38208639).

Almost surely, 2^151493789 is an apocalyptic number.

It is an amenable number.

151493789 is a deficient number, since it is larger than the sum of its proper divisors (1340767).

151493789 is a wasteful number, since it uses less digits than its factorization.

151493789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340766.

The product of its digits is 272160, while the sum is 47.

The square root of 151493789 is about 12308.2813178770. The cubic root of 151493789 is about 533.0872259909.

The spelling of 151493789 in words is "one hundred fifty-one million, four hundred ninety-three thousand, seven hundred eighty-nine".