157749699 has 8 divisors (see below), whose sum is σ = 210930192. Its totient is φ = 104867840.

The previous prime is 157749689. The next prime is 157749733. The reversal of 157749699 is 996947751.

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

It is a cyclic number.

It is not a de Polignac number, because 157749699 - 2⁵ = 157749667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157749629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73422 + ... + 75539.

It is an arithmetic number, because the mean of its divisors is an integer number (26366274).

Almost surely, 2^157749699 is an apocalyptic number.

157749699 is a deficient number, since it is larger than the sum of its proper divisors (53180493).

157749699 is a wasteful number, since it uses less digits than its factorization.

157749699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149317.

The product of its digits is 4286520, while the sum is 57.

The square root of 157749699 is about 12559.8447044540. The cubic root of 157749699 is about 540.3263904726.

The spelling of 157749699 in words is "one hundred fifty-seven million, seven hundred forty-nine thousand, six hundred ninety-nine".