190156897 has 12 divisors (see below), whose sum is σ = 224237316. Its totient is φ = 160755840.

The previous prime is 190156873. The next prime is 190156909. The reversal of 190156897 is 798651091.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 118178641 + 71978256 = 10871^2 + 8484^2 .

It is not a de Polignac number, because 190156897 - 2¹¹ = 190154849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190156297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23004 + ... + 30157.

It is an arithmetic number, because the mean of its divisors is an integer number (18686443).

Almost surely, 2^190156897 is an apocalyptic number.

It is an amenable number.

190156897 is a deficient number, since it is larger than the sum of its proper divisors (34080419).

190156897 is an equidigital number, since it uses as much as digits as its factorization.

190156897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53248 (or 53241 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 190156897 is about 13789.7388300141. The cubic root of 190156897 is about 575.0479072875.

The spelling of 190156897 in words is "one hundred ninety million, one hundred fifty-six thousand, eight hundred ninety-seven".