1187409364 has 12 divisors (see below), whose sum is σ = 2128648788. Its totient is φ = 579224000.

The previous prime is 1187409361. The next prime is 1187409367. The reversal of 1187409364 is 4639047811.

It is an interprime number because it is at equal distance from previous prime (1187409361) and next prime (1187409367).

It can be written as a sum of positive squares in 2 ways, for example, as 426752964 + 760656400 = 20658^2 + 27580^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1187409364.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187409361) 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, 3619987 + ... + 3620314.

It is an arithmetic number, because the mean of its divisors is an integer number (177387399).

Almost surely, 2^1187409364 is an apocalyptic number.

It is an amenable number.

1187409364 is a deficient number, since it is larger than the sum of its proper divisors (941239424).

1187409364 is a wasteful number, since it uses less digits than its factorization.

1187409364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7240346 (or 7240344 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1187409364 is about 34458.8067698230. The cubic root of 1187409364 is about 1058.9289537568.

The spelling of 1187409364 in words is "one billion, one hundred eighty-seven million, four hundred nine thousand, three hundred sixty-four".