1398542370 has 128 divisors (see below), whose sum is σ = 3647766528. Its totient is φ = 342144000.

The previous prime is 1398542359. The next prime is 1398542381. The reversal of 1398542370 is 732458931.

It is an interprime number because it is at equal distance from previous prime (1398542359) and next prime (1398542381).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3229674 + ... + 3230106.

It is an arithmetic number, because the mean of its divisors is an integer number (28498176).

Almost surely, 2^1398542370 is an apocalyptic number.

1398542370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1398542370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1823883264).

1398542370 is an abundant number, since it is smaller than the sum of its proper divisors (2249224158).

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

1398542370 is a wasteful number, since it uses less digits than its factorization.

1398542370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 1398542370 is about 37397.0903948422. The cubic root of 1398542370 is about 1118.3005609362.

The spelling of 1398542370 in words is "one billion, three hundred ninety-eight million, five hundred forty-two thousand, three hundred seventy".