157889803 has 2 divisors, whose sum is σ = 157889804. Its totient is φ = 157889802.

The previous prime is 157889801. The next prime is 157889813. The reversal of 157889803 is 308988751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157889803 - 2¹ = 157889801 is a prime.

Together with 157889801, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (157889801) 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 as a sum of consecutive naturals, namely, 78944901 + 78944902.

It is an arithmetic number, because the mean of its divisors is an integer number (78944902).

Almost surely, 2^157889803 is an apocalyptic number.

157889803 is the 6717-th centered heptagonal number.

157889803 is a deficient number, since it is larger than the sum of its proper divisors (1).

157889803 is an equidigital number, since it uses as much as digits as its factorization.

157889803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 49.

The square root of 157889803 is about 12565.4209241076. The cubic root of 157889803 is about 540.4863051746.

The spelling of 157889803 in words is "one hundred fifty-seven million, eight hundred eighty-nine thousand, eight hundred three".