1199513956 has 9 divisors (see below), whose sum is σ = 2099270649.
Its totient is φ = 599722344.
The previous prime is 1199513941. The next prime is 1199513957. The reversal of 1199513956 is 6593159911.
The square root of 1199513956 is 34634.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in only one way, i.e., 1019524900 + 179989056 = 31930^2 + 13416^2
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1199513957) by changing a digit.
It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 60610 + ... + 77926.
Almost surely, 21199513956 is an apocalyptic number.
1199513956 is the 34634-th square number.
It is an amenable number.
1199513956 is a deficient number, since it is larger than the sum of its proper divisors (899756693).
1199513956 is an frugal number, since it uses more digits than its factorization.
1199513956 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 34638 (or 17319 counting only the distinct ones).
The product of its digits is 328050, while the sum is 49.
The cubic root of 1199513956 is about 1062.5150779129.
Multiplying 1199513956 by its sum of digits (49), we get a square (58776183844 = 2424382).
The spelling of 1199513956 in words is "one billion, one hundred ninety-nine million, five hundred thirteen thousand, nine hundred fifty-six".