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1299379514 = 21374742261
BaseRepresentation
bin100110101110010…
…1111010100111010
310100120000022121012
41031130233110322
510130120121024
6332534113522
744125354316
oct11534572472
93316008535
101299379514
11607514074
123031ab8a2
1317927b724
14c47dcb46
157911b50e
hex4d72f53a

1299379514 has 8 divisors (see below), whose sum is σ = 1963296468. Its totient is φ = 644947360.

The previous prime is 1299379511. The next prime is 1299379519. The reversal of 1299379514 is 4159739921.

It can be written as a sum of positive squares in 2 ways, for example, as 1254930625 + 44448889 = 35425^2 + 6667^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1299379511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2370857 + ... + 2371404.

Almost surely, 21299379514 is an apocalyptic number.

1299379514 is a deficient number, since it is larger than the sum of its proper divisors (663916954).

1299379514 is a wasteful number, since it uses less digits than its factorization.

1299379514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4742400.

The product of its digits is 612360, while the sum is 50.

The square root of 1299379514 is about 36046.9071350095. The cubic root of 1299379514 is about 1091.2192159396.

The spelling of 1299379514 in words is "one billion, two hundred ninety-nine million, three hundred seventy-nine thousand, five hundred fourteen".

Divisors: 1 2 137 274 4742261 9484522 649689757 1299379514