190247637897 has 16 divisors (see below), whose sum is σ = 281862064960. Its totient is φ = 126825588000.

The previous prime is 190247637871. The next prime is 190247637907. The reversal of 190247637897 is 798736742091.

190247637897 is a `hidden beast` number, since 1 + 9 + 0 + 2 + 476 + 3 + 78 + 97 = 666.

It is not a de Polignac number, because 190247637897 - 2¹² = 190247633801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190247637197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432522 + ... + 753372.

It is an arithmetic number, because the mean of its divisors is an integer number (17616379060).

Almost surely, 2^190247637897 is an apocalyptic number.

It is an amenable number.

190247637897 is a deficient number, since it is larger than the sum of its proper divisors (91614427063).

190247637897 is a wasteful number, since it uses less digits than its factorization.

190247637897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342821 (or 342815 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 63.

The spelling of 190247637897 in words is "one hundred ninety billion, two hundred forty-seven million, six hundred thirty-seven thousand, eight hundred ninety-seven".