151391643 has 8 divisors (see below), whose sum is σ = 217382928. Its totient is φ = 93164064.

The previous prime is 151391641. The next prime is 151391657. The reversal of 151391643 is 346193151.

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

It is not a de Polignac number, because 151391643 - 2¹ = 151391641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (151391641) 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, 1940880 + ... + 1940957.

It is an arithmetic number, because the mean of its divisors is an integer number (27172866).

Almost surely, 2^151391643 is an apocalyptic number.

151391643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

151391643 is a deficient number, since it is larger than the sum of its proper divisors (65991285).

151391643 is a wasteful number, since it uses less digits than its factorization.

151391643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881853.

The product of its digits is 9720, while the sum is 33.

The square root of 151391643 is about 12304.1311355170. The cubic root of 151391643 is about 532.9673861586.

The spelling of 151391643 in words is "one hundred fifty-one million, three hundred ninety-one thousand, six hundred forty-three".