151320919 has 2 divisors, whose sum is σ = 151320920. Its totient is φ = 151320918.

The previous prime is 151320857. The next prime is 151320937. The reversal of 151320919 is 919023151.

It is a happy number.

151320919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 151320919 - 2¹⁹ = 150796631 is a prime.

It is a super-2 number, since 2×151320919² = 45796041054009122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151320019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75660459 + 75660460.

It is an arithmetic number, because the mean of its divisors is an integer number (75660460).

Almost surely, 2^151320919 is an apocalyptic number.

151320919 is a deficient number, since it is larger than the sum of its proper divisors (1).

151320919 is an equidigital number, since it uses as much as digits as its factorization.

151320919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 151320919 is about 12301.2568057089. The cubic root of 151320919 is about 532.8843796909.

It can be divided in two parts, 15132091 and 9, that added together give a square (15132100 = 3890²).

The spelling of 151320919 in words is "one hundred fifty-one million, three hundred twenty thousand, nine hundred nineteen".