1396738723902 has 32 divisors (see below), whose sum is σ = 2970829654272. Its totient is φ = 436262169984.

The previous prime is 1396738723873. The next prime is 1396738723909. The reversal of 1396738723902 is 2093278376931.

It is a super-2 number, since 2×1396738723902² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396738723909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30138778 + ... + 30185085.

It is an arithmetic number, because the mean of its divisors is an integer number (92838426696).

Almost surely, 2^{1396738723902} is an apocalyptic number.

1396738723902 is an abundant number, since it is smaller than the sum of its proper divisors (1574090930370).

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

1396738723902 is a wasteful number, since it uses less digits than its factorization.

1396738723902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60324112.

The product of its (nonzero) digits is 20575296, while the sum is 60.

The spelling of 1396738723902 in words is "one trillion, three hundred ninety-six billion, seven hundred thirty-eight million, seven hundred twenty-three thousand, nine hundred two".