1187479745 has 16 divisors (see below), whose sum is σ = 1435698432. Its totient is φ = 942864000.

The previous prime is 1187479717. The next prime is 1187479747. The reversal of 1187479745 is 5479747811.

It is not a de Polignac number, because 1187479745 - 2¹⁸ = 1187217601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1187479747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391304 + ... + 394326.

It is an arithmetic number, because the mean of its divisors is an integer number (89731152).

Almost surely, 2^1187479745 is an apocalyptic number.

It is an amenable number.

1187479745 is a deficient number, since it is larger than the sum of its proper divisors (248218687).

1187479745 is a wasteful number, since it uses less digits than its factorization.

1187479745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3592.

The product of its digits is 1975680, while the sum is 53.

The square root of 1187479745 is about 34459.8279885434. The cubic root of 1187479745 is about 1058.9498752150.

It can be divided in two parts, 11874 and 79745, that added together give a palindrome (91619).

The spelling of 1187479745 in words is "one billion, one hundred eighty-seven million, four hundred seventy-nine thousand, seven hundred forty-five".