1901457428729 has 8 divisors (see below), whose sum is σ = 1998263245440. Its totient is φ = 1807041879216.

The previous prime is 1901457428723. The next prime is 1901457428789. The reversal of 1901457428729 is 9278247541091.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1901457428729 is a prime.

It is a super-2 number, since 2×1901457428729² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1901457428723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597565169 + ... + 597568350.

It is an arithmetic number, because the mean of its divisors is an integer number (249782905680).

Almost surely, 2^{1901457428729} is an apocalyptic number.

It is an amenable number.

1901457428729 is a deficient number, since it is larger than the sum of its proper divisors (96805816711).

1901457428729 is a wasteful number, since it uses less digits than its factorization.

1901457428729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195133599.

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 1901457428729 in words is "one trillion, nine hundred one billion, four hundred fifty-seven million, four hundred twenty-eight thousand, seven hundred twenty-nine".