1308001989997 has 32 divisors (see below), whose sum is σ = 1395279095040. Its totient is φ = 1223631298560.

The previous prime is 1308001989989. The next prime is 1308001990021. The reversal of 1308001989997 is 7999891008031.

It is a cyclic number.

It is not a de Polignac number, because 1308001989997 - 2³ = 1308001989989 is a prime.

It is a super-2 number, since 2×1308001989997² (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 (1308001989097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79355997 + ... + 79372477.

It is an arithmetic number, because the mean of its divisors is an integer number (43602471720).

Almost surely, 2^{1308001989997} is an apocalyptic number.

It is an amenable number.

1308001989997 is a deficient number, since it is larger than the sum of its proper divisors (87277105043).

1308001989997 is a wasteful number, since it uses less digits than its factorization.

1308001989997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17013.

The product of its (nonzero) digits is 8817984, while the sum is 64.

The spelling of 1308001989997 in words is "one trillion, three hundred eight billion, one million, nine hundred eighty-nine thousand, nine hundred ninety-seven".