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190051954 = 2157605261
BaseRepresentation
bin10110101001111…
…11011001110010
3111020121122021021
423110333121302
5342123130304
630505250054
74465262221
oct1324773162
9436548237
10190051954
1198308934
125379392a
13304b32a1
141b352cb8
1511a41a54
hexb53f672

190051954 has 8 divisors (see below), whose sum is σ = 286894188. Its totient is φ = 94420560.

The previous prime is 190051913. The next prime is 190052021. The reversal of 190051954 is 459150091.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 189200025 + 851929 = 13755^2 + 923^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1900519542 = 72239490438436232, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 302317 + ... + 302944.

Almost surely, 2190051954 is an apocalyptic number.

190051954 is a deficient number, since it is larger than the sum of its proper divisors (96842234).

190051954 is a wasteful number, since it uses less digits than its factorization.

190051954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605420.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 190051954 is about 13785.9331929326. The cubic root of 190051954 is about 574.9421028031.

The spelling of 190051954 in words is "one hundred ninety million, fifty-one thousand, nine hundred fifty-four".

Divisors: 1 2 157 314 605261 1210522 95025977 190051954