151680813 has 4 divisors (see below), whose sum is σ = 202241088. Its totient is φ = 101120540.

The previous prime is 151680811. The next prime is 151680829. The reversal of 151680813 is 318086151.

151680813 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.

It is a cyclic number.

It is not a de Polignac number, because 151680813 - 2¹ = 151680811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151680811) 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, 25280133 + ... + 25280138.

It is an arithmetic number, because the mean of its divisors is an integer number (50560272).

Almost surely, 2^151680813 is an apocalyptic number.

It is an amenable number.

151680813 is a deficient number, since it is larger than the sum of its proper divisors (50560275).

151680813 is an equidigital number, since it uses as much as digits as its factorization.

151680813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50560274.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 151680813 is about 12315.8764608939. The cubic root of 151680813 is about 533.3065069406.

The spelling of 151680813 in words is "one hundred fifty-one million, six hundred eighty thousand, eight hundred thirteen".