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7838149112 = 234799204161
BaseRepresentation
bin1110100110011000…
…01010100111111000
3202020020212020012222
413103030022213320
5112023031232422
63333434423212
7365144111453
oct72314124770
922206766188
107838149112
113362481492
121628b91b08
1397bb55071
14544db649a
1530d1c9842
hex1d330a9f8

7838149112 has 16 divisors (see below), whose sum is σ = 14699664000. Its totient is φ = 3918238720.

The previous prime is 7838149049. The next prime is 7838149141. The reversal of 7838149112 is 2119418387.

It is a super-2 number, since 2×78381491122 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 63689 + ... + 140472.

It is an arithmetic number, because the mean of its divisors is an integer number (918729000).

Almost surely, 27838149112 is an apocalyptic number.

It is an amenable number.

7838149112 is a deficient number, since it is larger than the sum of its proper divisors (6861514888).

7838149112 is a wasteful number, since it uses less digits than its factorization.

7838149112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208966 (or 208962 counting only the distinct ones).

The product of its digits is 96768, while the sum is 44.

The square root of 7838149112 is about 88533.3220431720. The cubic root of 7838149112 is about 1986.4204323492.

The spelling of 7838149112 in words is "seven billion, eight hundred thirty-eight million, one hundred forty-nine thousand, one hundred twelve".

Divisors: 1 2 4 8 4799 9598 19196 38392 204161 408322 816644 1633288 979768639 1959537278 3919074556 7838149112