151813749 has 4 divisors (see below), whose sum is σ = 202418336. Its totient is φ = 101209164.

The previous prime is 151813733. The next prime is 151813751. The reversal of 151813749 is 947318151.

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 not a de Polignac number, because 151813749 - 2⁴ = 151813733 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 (151813709) 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, 25302289 + ... + 25302294.

It is an arithmetic number, because the mean of its divisors is an integer number (50604584).

Almost surely, 2^151813749 is an apocalyptic number.

It is an amenable number.

151813749 is a deficient number, since it is larger than the sum of its proper divisors (50604587).

151813749 is an equidigital number, since it uses as much as digits as its factorization.

151813749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50604586.

The product of its digits is 30240, while the sum is 39.

The square root of 151813749 is about 12321.2722151570. The cubic root of 151813749 is about 533.4622614953.

The spelling of 151813749 in words is "one hundred fifty-one million, eight hundred thirteen thousand, seven hundred forty-nine".