1380556674 has 72 divisors (see below), whose sum is σ = 3564527148. Its totient is φ = 384814080.

The previous prime is 1380556673. The next prime is 1380556703. The reversal of 1380556674 is 4766550831.

1380556674 is a `hidden beast` number, since 1 + 3 + 80 + 5 + 566 + 7 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 969886449 + 410670225 = 31143^2 + 20265^2 .

It is not an unprimeable number, because it can be changed into a prime (1380556673) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17074 + ... + 55250.

Almost surely, 2^1380556674 is an apocalyptic number.

1380556674 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1380556674, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1782263574).

1380556674 is an abundant number, since it is smaller than the sum of its proper divisors (2183970474).

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

1380556674 is a wasteful number, since it uses less digits than its factorization.

1380556674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38240 (or 38230 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 1380556674 is about 37155.8430667372. The cubic root of 1380556674 is about 1113.4859631743.

The spelling of 1380556674 in words is "one billion, three hundred eighty million, five hundred fifty-six thousand, six hundred seventy-four".