1978202372314 has 24 divisors (see below), whose sum is σ = 3503280119040. Its totient is φ = 835147267416.

The previous prime is 1978202372261. The next prime is 1978202372323. The reversal of 1978202372314 is 4132732028791.

It is a happy number.

It is a super-3 number, since 3×1978202372314³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150633274 + ... + 150646405.

It is an arithmetic number, because the mean of its divisors is an integer number (145970004960).

Almost surely, 2^{1978202372314} is an apocalyptic number.

1978202372314 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1978202372314 is a deficient number, since it is larger than the sum of its proper divisors (1525077746726).

1978202372314 is a wasteful number, since it uses less digits than its factorization.

1978202372314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301279762 (or 301279755 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 1978202372314 in words is "one trillion, nine hundred seventy-eight billion, two hundred two million, three hundred seventy-two thousand, three hundred fourteen".