190456503257 has 16 divisors (see below), whose sum is σ = 207134206992. Its totient is φ = 174388193280.

The previous prime is 190456503233. The next prime is 190456503271. The reversal of 190456503257 is 752305654091.

It can be written as a sum of positive squares in 8 ways, for example, as 37490253376 + 152966249881 = 193624^2 + 391109^2 .

It is a cyclic number.

It is not a de Polignac number, because 190456503257 - 2¹⁴ = 190456486873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190456503217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9307157 + ... + 9327597.

It is an arithmetic number, because the mean of its divisors is an integer number (12945887937).

Almost surely, 2^190456503257 is an apocalyptic number.

190456503257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

190456503257 is a deficient number, since it is larger than the sum of its proper divisors (16677703735).

190456503257 is a wasteful number, since it uses less digits than its factorization.

190456503257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35308.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 190456503257 in words is "one hundred ninety billion, four hundred fifty-six million, five hundred three thousand, two hundred fifty-seven".