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137865901 = 1914331667
BaseRepresentation
bin10000011011110…
…10101010101101
3100121102022110111
420031322222231
5240243202101
621402540021
73262561255
oct1015725255
9317368414
10137865901
1170904768
123a207611
1322740b74
141444a965
15c184251
hex837aaad

137865901 has 8 divisors (see below), whose sum is σ = 138991104. Its totient is φ = 136745280.

The previous prime is 137865877. The next prime is 137865907. The reversal of 137865901 is 109568731.

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

It is a cyclic number.

It is not a de Polignac number, because 137865901 - 215 = 137833133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137865907) 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, 81870 + ... + 83536.

It is an arithmetic number, because the mean of its divisors is an integer number (17373888).

Almost surely, 2137865901 is an apocalyptic number.

It is an amenable number.

137865901 is a deficient number, since it is larger than the sum of its proper divisors (1125203).

137865901 is a wasteful number, since it uses less digits than its factorization.

137865901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 137865901 is about 11741.6311047486. The cubic root of 137865901 is about 516.5974853376.

The spelling of 137865901 in words is "one hundred thirty-seven million, eight hundred sixty-five thousand, nine hundred one".

Divisors: 1 191 433 1667 82703 318397 721811 137865901