1187901268 has 6 divisors (see below), whose sum is σ = 2078827226. Its totient is φ = 593950632.

The previous prime is 1187901259. The next prime is 1187901271. The reversal of 1187901268 is 8621097811.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 767733264 + 420168004 = 27708^2 + 20498^2 .

It is a super-3 number, since 3×1187901268³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 148487655 + ... + 148487662.

Almost surely, 2^1187901268 is an apocalyptic number.

It is an amenable number.

1187901268 is a deficient number, since it is larger than the sum of its proper divisors (890925958).

1187901268 is a wasteful number, since it uses less digits than its factorization.

1187901268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296975321 (or 296975319 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 43.

The square root of 1187901268 is about 34465.9435965418. The cubic root of 1187901268 is about 1059.0751598564.

The spelling of 1187901268 in words is "one billion, one hundred eighty-seven million, nine hundred one thousand, two hundred sixty-eight".