1380202898 has 4 divisors (see below), whose sum is σ = 2070304350. Its totient is φ = 690101448.

The previous prime is 1380202877. The next prime is 1380202909. The reversal of 1380202898 is 8982020831.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1354019209 + 26183689 = 36797^2 + 5117^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345050723 + ... + 345050726.

Almost surely, 2^1380202898 is an apocalyptic number.

1380202898 is a deficient number, since it is larger than the sum of its proper divisors (690101452).

1380202898 is an equidigital number, since it uses as much as digits as its factorization.

1380202898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690101451.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 1380202898 is about 37151.0820569200. The cubic root of 1380202898 is about 1113.3908425439.

The spelling of 1380202898 in words is "one billion, three hundred eighty million, two hundred two thousand, eight hundred ninety-eight".