1945487980780 has 24 divisors (see below), whose sum is σ = 4108096727280. Its totient is φ = 773895769920.

The previous prime is 1945487980741. The next prime is 1945487980819. The reversal of 1945487980780 is 870897845491.

It is an interprime number because it is at equal distance from previous prime (1945487980741) and next prime (1945487980819).

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, 268710190 + ... + 268717429.

It is an arithmetic number, because the mean of its divisors is an integer number (171170696970).

Almost surely, 2^{1945487980780} is an apocalyptic number.

1945487980780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1945487980780 is an abundant number, since it is smaller than the sum of its proper divisors (2162608746500).

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

1945487980780 is a wasteful number, since it uses less digits than its factorization.

1945487980780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537427809 (or 537427807 counting only the distinct ones).

The product of its (nonzero) digits is 162570240, while the sum is 70.

The spelling of 1945487980780 in words is "one trillion, nine hundred forty-five billion, four hundred eighty-seven million, nine hundred eighty thousand, seven hundred eighty".