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1988064001 = 71122347183
BaseRepresentation
bin111011001111111…
…0111001100000001
312010112220010010001
41312133313030001
513032421022001
6525135040001
7100160156650
oct16637671401
95115803101
101988064001
11930234a00
12475970001
13258b58541
1414c06d197
15b9806001
hex767f7301

1988064001 has 12 divisors (see below), whose sum is σ = 2497403776. Its totient is φ = 1549140120.

The previous prime is 1988063989. The next prime is 1988064011. The reversal of 1988064001 is 1004608891.

It is a happy number.

It is not a de Polignac number, because 1988064001 - 211 = 1988061953 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1988064011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1172745 + ... + 1174438.

Almost surely, 21988064001 is an apocalyptic number.

1988064001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1988064001 is a deficient number, since it is larger than the sum of its proper divisors (509339775).

1988064001 is a wasteful number, since it uses less digits than its factorization.

1988064001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347212 (or 2347201 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 1988064001 is about 44587.7113227400. The cubic root of 1988064001 is about 1257.4096444952.

The spelling of 1988064001 in words is "one billion, nine hundred eighty-eight million, sixty-four thousand, one".

Divisors: 1 7 11 77 121 847 2347183 16430281 25819013 180733091 284009143 1988064001