1380724258 has 8 divisors (see below), whose sum is σ = 2192915052. Its totient is φ = 649752576.

The previous prime is 1380724231. The next prime is 1380724259. The reversal of 1380724258 is 8524270831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1320086889 + 60637369 = 36333^2 + 7787^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1380724258.

It is not an unprimeable number, because it can be changed into a prime (1380724259) 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, 20304735 + ... + 20304802.

Almost surely, 2^1380724258 is an apocalyptic number.

1380724258 is a deficient number, since it is larger than the sum of its proper divisors (812190794).

1380724258 is a wasteful number, since it uses less digits than its factorization.

1380724258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40609556.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 1380724258 is about 37158.0981483175. The cubic root of 1380724258 is about 1113.5310162279.

The spelling of 1380724258 in words is "one billion, three hundred eighty million, seven hundred twenty-four thousand, two hundred fifty-eight".