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38740825957 = 293617214297
BaseRepresentation
bin100100000101001000…
…100001011101100101
310200222220200212102211
4210011020201131211
51113320122412312
625444114203421
72541014405311
oct440510413545
9120886625384
1038740825957
1115480205a39
127612283571
133865240072
141c37276b41
15101b1ad3a7
hex905221765

38740825957 has 8 divisors (see below), whose sum is σ = 38936232216. Its totient is φ = 38545850112.

The previous prime is 38740825943. The next prime is 38740825967. The reversal of 38740825957 is 75952804783.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7848896836 + 30891929121 = 88594^2 + 175761^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-38740825957 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 (38740825967) 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, 73633 + ... + 287929.

It is an arithmetic number, because the mean of its divisors is an integer number (4867029027).

Almost surely, 238740825957 is an apocalyptic number.

It is an amenable number.

38740825957 is a deficient number, since it is larger than the sum of its proper divisors (195406259).

38740825957 is a wasteful number, since it uses less digits than its factorization.

38740825957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215207.

The product of its (nonzero) digits is 16934400, while the sum is 58.

The spelling of 38740825957 in words is "thirty-eight billion, seven hundred forty million, eight hundred twenty-five thousand, nine hundred fifty-seven".

Divisors: 1 293 617 180781 214297 62789021 132221249 38740825957