1938862465940 has 24 divisors (see below), whose sum is σ = 4123150563840. Its totient is φ = 765727960608.

The previous prime is 1938862465889. The next prime is 1938862465951. The reversal of 1938862465940 is 495642688391.

It is a congruent number.

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, 613562492 + ... + 613565651.

It is an arithmetic number, because the mean of its divisors is an integer number (171797940160).

Almost surely, 2^{1938862465940} is an apocalyptic number.

1938862465940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1938862465940 is an abundant number, since it is smaller than the sum of its proper divisors (2184288097900).

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

1938862465940 is a wasteful number, since it uses less digits than its factorization.

1938862465940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227128231 (or 1227128229 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 65.

The spelling of 1938862465940 in words is "one trillion, nine hundred thirty-eight billion, eight hundred sixty-two million, four hundred sixty-five thousand, nine hundred forty".