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18102948754 = 2114909167623
BaseRepresentation
bin10000110111000001…
…010001001110010010
31201201121220002011111
4100313001101032102
5244033323330004
612152201003534
71210415345152
oct206701211622
951647802144
1018102948754
11774a708380
1236127835aa
1319266672c7
14c3a388762
1570e441a04
hex437051392

18102948754 has 16 divisors (see below), whose sum is σ = 29629218240. Its totient is φ = 8226887760.

The previous prime is 18102948751. The next prime is 18102948769. The reversal of 18102948754 is 45784920181.

It is a junction number, because it is equal to n+sod(n) for n = 18102948698 and 18102948707.

It is not an unprimeable number, because it can be changed into a prime (18102948751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24187 + ... + 191809.

It is an arithmetic number, because the mean of its divisors is an integer number (1851826140).

Almost surely, 218102948754 is an apocalyptic number.

18102948754 is a deficient number, since it is larger than the sum of its proper divisors (11526269486).

18102948754 is a wasteful number, since it uses less digits than its factorization.

18102948754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172545.

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 18102948754 in words is "eighteen billion, one hundred two million, nine hundred forty-eight thousand, seven hundred fifty-four".

Divisors: 1 2 11 22 4909 9818 53999 107998 167623 335246 1843853 3687706 822861307 1645722614 9051474377 18102948754