1381898 has 24 divisors (see below), whose sum is σ = 2462400. Its totient is φ = 579768.

The previous prime is 1381883. The next prime is 1381901. The reversal of 1381898 is 8981831.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5663 + ... + 5901.

It is an arithmetic number, because the mean of its divisors is an integer number (102600).

2^1381898 is an apocalyptic number.

1381898 is a deficient number, since it is larger than the sum of its proper divisors (1080502).

1381898 is a wasteful number, since it uses less digits than its factorization.

1381898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 307 counting only the distinct ones).

The product of its digits is 13824, while the sum is 38.

The square root of 1381898 is about 1175.5415773166. The cubic root of 1381898 is about 111.3846461288.

The spelling of 1381898 in words is "one million, three hundred eighty-one thousand, eight hundred ninety-eight".