157803806 has 4 divisors (see below), whose sum is σ = 236705712. Its totient is φ = 78901902.

The previous prime is 157803803. The next prime is 157803847. The reversal of 157803806 is 608308751.

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

It is a self number, because there is not a number n which added to its sum of digits gives 157803806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157803803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39450950 + ... + 39450953.

It is an arithmetic number, because the mean of its divisors is an integer number (59176428).

Almost surely, 2^157803806 is an apocalyptic number.

157803806 is a deficient number, since it is larger than the sum of its proper divisors (78901906).

157803806 is an equidigital number, since it uses as much as digits as its factorization.

157803806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78901905.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 157803806 is about 12561.9984875019. The cubic root of 157803806 is about 540.3881594191.

Adding to 157803806 its sum of digits (38), we get a square (157803844 = 12562²).

The spelling of 157803806 in words is "one hundred fifty-seven million, eight hundred three thousand, eight hundred six".