157439803 has 2 divisors, whose sum is σ = 157439804. Its totient is φ = 157439802.

The previous prime is 157439791. The next prime is 157439837. The reversal of 157439803 is 308934751.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157439803 is a prime.

It is equal to p_8838931 and since 157439803 and 8838931 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (157439003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78719901 + 78719902.

It is an arithmetic number, because the mean of its divisors is an integer number (78719902).

Almost surely, 2^157439803 is an apocalyptic number.

157439803 is a deficient number, since it is larger than the sum of its proper divisors (1).

157439803 is an equidigital number, since it uses as much as digits as its factorization.

157439803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 157439803 is about 12547.5018629208. The cubic root of 157439803 is about 539.9723385465.

The spelling of 157439803 in words is "one hundred fifty-seven million, four hundred thirty-nine thousand, eight hundred three".