1398301540 has 24 divisors (see below), whose sum is σ = 2947045752. Its totient is φ = 557299200.

The previous prime is 1398301511. The next prime is 1398301571. The reversal of 1398301540 is 451038931.

It can be written as a sum of positive squares in 4 ways, for example, as 251666496 + 1146635044 = 15864^2 + 33862^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1398301496 and 1398301505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120661 + ... + 131740.

It is an arithmetic number, because the mean of its divisors is an integer number (122793573).

Almost surely, 2^1398301540 is an apocalyptic number.

1398301540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1398301540 is an abundant number, since it is smaller than the sum of its proper divisors (1548744212).

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

1398301540 is a wasteful number, since it uses less digits than its factorization.

1398301540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252687 (or 252685 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1398301540 is about 37393.8703533079. The cubic root of 1398301540 is about 1118.2363665315.

The spelling of 1398301540 in words is "one billion, three hundred ninety-eight million, three hundred one thousand, five hundred forty".