190949457 has 16 divisors (see below), whose sum is σ = 270283392. Its totient is φ = 119496960.

The previous prime is 190949401. The next prime is 190949461. The reversal of 190949457 is 754949091.

It is not a de Polignac number, because 190949457 - 2⁶ = 190949393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (190949477) 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, 15532 + ... + 24962.

It is an arithmetic number, because the mean of its divisors is an integer number (16892712).

Almost surely, 2^190949457 is an apocalyptic number.

190949457 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

190949457 is a deficient number, since it is larger than the sum of its proper divisors (79333935).

190949457 is a wasteful number, since it uses less digits than its factorization.

190949457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9848.

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 190949457 is about 13818.4462585343. The cubic root of 190949457 is about 575.8457190723.

The spelling of 190949457 in words is "one hundred ninety million, nine hundred forty-nine thousand, four hundred fifty-seven".