1187949995 has 4 divisors (see below), whose sum is σ = 1425540000. Its totient is φ = 950359992.

The previous prime is 1187949947. The next prime is 1187950037. The reversal of 1187949995 is 5999497811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5999497811 = 107 ⋅56070073.

It is a cyclic number.

It is not a de Polignac number, because 1187949995 - 2¹⁶ = 1187884459 is a prime.

It is a super-2 number, since 2×1187949995² = 2822450381241000050, 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, 118794995 + ... + 118795004.

It is an arithmetic number, because the mean of its divisors is an integer number (356385000).

Almost surely, 2^1187949995 is an apocalyptic number.

1187949995 is a deficient number, since it is larger than the sum of its proper divisors (237590005).

1187949995 is an equidigital number, since it uses as much as digits as its factorization.

1187949995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237590004.

The product of its digits is 7348320, while the sum is 62.

The square root of 1187949995 is about 34466.6504754959. The cubic root of 1187949995 is about 1059.0896405351.

The spelling of 1187949995 in words is "one billion, one hundred eighty-seven million, nine hundred forty-nine thousand, nine hundred ninety-five".