Search a number
-
+
1979914514 = 21019801557
BaseRepresentation
bin111011000000011…
…0001100100010010
312002222120002010012
41312000301210102
513023324231024
6524244234522
7100030665344
oct16600614422
95088502105
101979914514
11926679096
1247309ba42
13257264066
1414ad4b294
15b8c4650e
hex76031912

1979914514 has 8 divisors (see below), whose sum is σ = 2999276748. Its totient is φ = 980155600.

The previous prime is 1979914501. The next prime is 1979914523. The reversal of 1979914514 is 4154199791.

It can be written as a sum of positive squares in 2 ways, for example, as 1978737289 + 1177225 = 44483^2 + 1085^2 .

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

It is a super-2 number, since 2×19799145142 = 7840122965495712392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4900577 + ... + 4900980.

Almost surely, 21979914514 is an apocalyptic number.

1979914514 is a deficient number, since it is larger than the sum of its proper divisors (1019362234).

1979914514 is a wasteful number, since it uses less digits than its factorization.

1979914514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9801660.

The product of its digits is 408240, while the sum is 50.

The square root of 1979914514 is about 44496.2303347149. The cubic root of 1979914514 is about 1255.6891637695.

The spelling of 1979914514 in words is "one billion, nine hundred seventy-nine million, nine hundred fourteen thousand, five hundred fourteen".

Divisors: 1 2 101 202 9801557 19603114 989957257 1979914514