151368691 has 4 divisors (see below), whose sum is σ = 156251584. Its totient is φ = 146485800.

The previous prime is 151368673. The next prime is 151368709. The reversal of 151368691 is 196863151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196863151 = 6959 ⋅28289.

It is an interprime number because it is at equal distance from previous prime (151368673) and next prime (151368709).

It is a cyclic number.

It is not a de Polignac number, because 151368691 - 2⁷ = 151368563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151368641) 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, 2441400 + ... + 2441461.

It is an arithmetic number, because the mean of its divisors is an integer number (39062896).

Almost surely, 2^151368691 is an apocalyptic number.

151368691 is a deficient number, since it is larger than the sum of its proper divisors (4882893).

151368691 is an equidigital number, since it uses as much as digits as its factorization.

151368691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4882892.

The product of its digits is 38880, while the sum is 40.

The square root of 151368691 is about 12303.1984052928. The cubic root of 151368691 is about 532.9404509737.

The spelling of 151368691 in words is "one hundred fifty-one million, three hundred sixty-eight thousand, six hundred ninety-one".