157673811 has 4 divisors (see below), whose sum is σ = 210231752. Its totient is φ = 105115872.

The previous prime is 157673777. The next prime is 157673833. The reversal of 157673811 is 118376751.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 157673811 - 2¹⁹ = 157149523 is a prime.

It is a super-2 number, since 2×157673811² = 49722061350527442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157673811.

It is not an unprimeable number, because it can be changed into a prime (157673851) 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, 26278966 + ... + 26278971.

It is an arithmetic number, because the mean of its divisors is an integer number (52557938).

Almost surely, 2^157673811 is an apocalyptic number.

157673811 is a deficient number, since it is larger than the sum of its proper divisors (52557941).

157673811 is an equidigital number, since it uses as much as digits as its factorization.

157673811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52557940.

The product of its digits is 35280, while the sum is 39.

The square root of 157673811 is about 12556.8232845732. The cubic root of 157673811 is about 540.2397323756.

The spelling of 157673811 in words is "one hundred fifty-seven million, six hundred seventy-three thousand, eight hundred eleven".