1361113487 has 4 divisors (see below), whose sum is σ = 1397900376. Its totient is φ = 1324326600.

The previous prime is 1361113477. The next prime is 1361113499. The reversal of 1361113487 is 7843111631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1361113487 - 2²⁴ = 1344336271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361113477) 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, 18393389 + ... + 18393462.

It is an arithmetic number, because the mean of its divisors is an integer number (349475094).

Almost surely, 2^1361113487 is an apocalyptic number.

1361113487 is a deficient number, since it is larger than the sum of its proper divisors (36786889).

1361113487 is an equidigital number, since it uses as much as digits as its factorization.

1361113487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36786888.

The product of its digits is 12096, while the sum is 35.

The square root of 1361113487 is about 36893.2715681329. The cubic root of 1361113487 is about 1108.2339383507.

The spelling of 1361113487 in words is "one billion, three hundred sixty-one million, one hundred thirteen thousand, four hundred eighty-seven".