1381980540 has 48 divisors (see below), whose sum is σ = 3886630272. Its totient is φ = 366901056.

The previous prime is 1381980533. The next prime is 1381980547. The reversal of 1381980540 is 450891831.

It is an interprime number because it is at equal distance from previous prime (1381980533) and next prime (1381980547).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381980547) 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, 37114 + ... + 64353.

It is an arithmetic number, because the mean of its divisors is an integer number (80971464).

Almost surely, 2^1381980540 is an apocalyptic number.

1381980540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1381980540 is an abundant number, since it is smaller than the sum of its proper divisors (2504649732).

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

1381980540 is a wasteful number, since it uses less digits than its factorization.

1381980540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101706 (or 101704 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 1381980540 is about 37174.9988567586. The cubic root of 1381980540 is about 1113.8686373236.

The spelling of 1381980540 in words is "one billion, three hundred eighty-one million, nine hundred eighty thousand, five hundred forty".