1538001380 has 48 divisors (see below), whose sum is σ = 3293136000. Its totient is φ = 603192576.

The previous prime is 1538001347. The next prime is 1538001383. The reversal of 1538001380 is 831008351.

It is not an unprimeable number, because it can be changed into a prime (1538001383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516536 + ... + 519504.

It is an arithmetic number, because the mean of its divisors is an integer number (68607000).

Almost surely, 2^1538001380 is an apocalyptic number.

1538001380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1538001380 is an abundant number, since it is smaller than the sum of its proper divisors (1755134620).

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

1538001380 is a wasteful number, since it uses less digits than its factorization.

1538001380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3476 (or 3474 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1538001380 is about 39217.3606965079. The cubic root of 1538001380 is about 1154.3005653901.

The spelling of 1538001380 in words is "one billion, five hundred thirty-eight million, one thousand, three hundred eighty".