1374151640 has 16 divisors (see below), whose sum is σ = 3091841280. Its totient is φ = 549660640.

The previous prime is 1374151627. The next prime is 1374151661. The reversal of 1374151640 is 461514731.

It is a junction number, because it is equal to n+sod(n) for n = 1374151597 and 1374151606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17176856 + ... + 17176935.

It is an arithmetic number, because the mean of its divisors is an integer number (193240080).

Almost surely, 2^1374151640 is an apocalyptic number.

1374151640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1374151640 is an abundant number, since it is smaller than the sum of its proper divisors (1717689640).

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

1374151640 is a wasteful number, since it uses less digits than its factorization.

1374151640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34353802 (or 34353798 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1374151640 is about 37069.5513865490. The cubic root of 1374151640 is about 1111.7613029920.

The spelling of 1374151640 in words is "one billion, three hundred seventy-four million, one hundred fifty-one thousand, six hundred forty".