1970401658406 has 16 divisors (see below), whose sum is σ = 4112142591744. Its totient is φ = 628244006984.

The previous prime is 1970401658399. The next prime is 1970401658413. The reversal of 1970401658406 is 6048561040791.

It is an interprime number because it is at equal distance from previous prime (1970401658399) and next prime (1970401658413).

It is a super-2 number, since 2×1970401658406² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7139136306 + ... + 7139136581.

It is an arithmetic number, because the mean of its divisors is an integer number (257008911984).

Almost surely, 2^{1970401658406} is an apocalyptic number.

1970401658406 is an abundant number, since it is smaller than the sum of its proper divisors (2141740933338).

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

1970401658406 is a wasteful number, since it uses less digits than its factorization.

1970401658406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14278272915.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 1970401658406 in words is "one trillion, nine hundred seventy billion, four hundred one million, six hundred fifty-eight thousand, four hundred six".