1390141980 has 48 divisors (see below), whose sum is σ = 4324887840. Its totient is φ = 370704384.

The previous prime is 1390141979. The next prime is 1390142069. The reversal of 1390141980 is 891410931.

1390141980 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1286629 + ... + 1287708.

It is an arithmetic number, because the mean of its divisors is an integer number (90101830).

Almost surely, 2^1390141980 is an apocalyptic number.

1390141980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1390141980 is an abundant number, since it is smaller than the sum of its proper divisors (2934745860).

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

1390141980 is a wasteful number, since it uses less digits than its factorization.

1390141980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574355 (or 2574347 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 1390141980 is about 37284.6078160948. The cubic root of 1390141980 is about 1116.0570268003.

The spelling of 1390141980 in words is "one billion, three hundred ninety million, one hundred forty-one thousand, nine hundred eighty".