1393525729540 has 48 divisors (see below), whose sum is σ = 3353194156032. Its totient is φ = 476532763776.

The previous prime is 1393525729537. The next prime is 1393525729567. The reversal of 1393525729540 is 459275253931.

It is a happy number.

It is a super-2 number, since 2×1393525729540² (a number of 25 digits) contains 22 as substring.

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, 12940839 + ... + 13048078.

It is an arithmetic number, because the mean of its divisors is an integer number (69858211584).

Almost surely, 2^{1393525729540} is an apocalyptic number.

1393525729540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1393525729540 is an abundant number, since it is smaller than the sum of its proper divisors (1959668426492).

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

1393525729540 is a wasteful number, since it uses less digits than its factorization.

1393525729540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25989316 (or 25989314 counting only the distinct ones).

The product of its (nonzero) digits is 10206000, while the sum is 55.

The spelling of 1393525729540 in words is "one trillion, three hundred ninety-three billion, five hundred twenty-five million, seven hundred twenty-nine thousand, five hundred forty".