1187264740 has 12 divisors (see below), whose sum is σ = 2493255996. Its totient is φ = 474905888.

The previous prime is 1187264719. The next prime is 1187264801. The reversal of 1187264740 is 474627811.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 441756324 + 745508416 = 21018^2 + 27304^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1187264693 and 1187264702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29681599 + ... + 29681638.

It is an arithmetic number, because the mean of its divisors is an integer number (207771333).

Almost surely, 2^1187264740 is an apocalyptic number.

1187264740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1187264740 is an abundant number, since it is smaller than the sum of its proper divisors (1305991256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1187264740 is a wasteful number, since it uses less digits than its factorization.

1187264740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59363246 (or 59363244 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 1187264740 is about 34456.7082002910. The cubic root of 1187264740 is about 1058.8859602271.

The spelling of 1187264740 in words is "one billion, one hundred eighty-seven million, two hundred sixty-four thousand, seven hundred forty".