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1138613816 = 23142326727
BaseRepresentation
bin100001111011101…
…1101111000111000
32221100111120112002
41003313131320320
54312441120231
6304552240132
740134025544
oct10367357070
92840446462
101138613816
1153479945a
122793a0048
13151b805b2
14ab310a24
1569e620cb
hex43ddde38

1138613816 has 8 divisors (see below), whose sum is σ = 2134900920. Its totient is φ = 569306904.

The previous prime is 1138613783. The next prime is 1138613821. The reversal of 1138613816 is 6183168311.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1138613816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71163356 + ... + 71163371.

It is an arithmetic number, because the mean of its divisors is an integer number (266862615).

Almost surely, 21138613816 is an apocalyptic number.

It is an amenable number.

1138613816 is a deficient number, since it is larger than the sum of its proper divisors (996287104).

1138613816 is a wasteful number, since it uses less digits than its factorization.

1138613816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142326733 (or 142326729 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 1138613816 is about 33743.3521749099. The cubic root of 1138613816 is about 1044.2203431905.

The spelling of 1138613816 in words is "one billion, one hundred thirty-eight million, six hundred thirteen thousand, eight hundred sixteen".

Divisors: 1 2 4 8 142326727 284653454 569306908 1138613816