151191613 has 4 divisors (see below), whose sum is σ = 152097120. Its totient is φ = 150286108.

The previous prime is 151191487. The next prime is 151191629. The reversal of 151191613 is 316191151.

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, and also an emirpimes, since its reverse is a distinct semiprime: 316191151 = 103 ⋅3069817.

It is a cyclic number.

It is not a de Polignac number, because 151191613 - 2¹⁷ = 151060541 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 (151194613) 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, 452503 + ... + 452836.

It is an arithmetic number, because the mean of its divisors is an integer number (38024280).

Almost surely, 2^151191613 is an apocalyptic number.

It is an amenable number.

151191613 is a deficient number, since it is larger than the sum of its proper divisors (905507).

151191613 is an equidigital number, since it uses as much as digits as its factorization.

151191613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905506.

The product of its digits is 810, while the sum is 28.

The square root of 151191613 is about 12295.9998780091. Note that the first 3 decimals coincide. The cubic root of 151191613 is about 532.7325505316.

The spelling of 151191613 in words is "one hundred fifty-one million, one hundred ninety-one thousand, six hundred thirteen".