1389542898 has 16 divisors (see below), whose sum is σ = 2785509216. Its totient is φ = 462110400.

The previous prime is 1389542897. The next prime is 1389542899. The reversal of 1389542898 is 8982459831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1389542897) and next prime (1389542899).

It is not an unprimeable number, because it can be changed into a prime (1389542897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264828 + ... + 270023.

It is an arithmetic number, because the mean of its divisors is an integer number (174094326).

Almost surely, 2^1389542898 is an apocalyptic number.

1389542898 is an abundant number, since it is smaller than the sum of its proper divisors (1395966318).

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

1389542898 is a wasteful number, since it uses less digits than its factorization.

1389542898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535289.

The product of its digits is 4976640, while the sum is 57.

The square root of 1389542898 is about 37276.5730452787. The cubic root of 1389542898 is about 1115.8966820887.

The spelling of 1389542898 in words is "one billion, three hundred eighty-nine million, five hundred forty-two thousand, eight hundred ninety-eight".