157834819 has 2 divisors, whose sum is σ = 157834820. Its totient is φ = 157834818.

The previous prime is 157834813. The next prime is 157834837. The reversal of 157834819 is 918438751.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157834819 - 2²¹ = 155737667 is a prime.

It is a super-2 number, since 2×157834819² = 49823660177525522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (157834813) 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, 78917409 + 78917410.

It is an arithmetic number, because the mean of its divisors is an integer number (78917410).

Almost surely, 2^157834819 is an apocalyptic number.

157834819 is a deficient number, since it is larger than the sum of its proper divisors (1).

157834819 is an equidigital number, since it uses as much as digits as its factorization.

157834819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 46.

The square root of 157834819 is about 12563.2328243968. The cubic root of 157834819 is about 540.4235577208.

It can be divided in two parts, 15783 and 4819, that added together give a palindrome (20602).

The spelling of 157834819 in words is "one hundred fifty-seven million, eight hundred thirty-four thousand, eight hundred nineteen".