1921417071029 has 4 divisors (see below), whose sum is σ = 1927595261280. Its totient is φ = 1915238880780.

The previous prime is 1921417070983. The next prime is 1921417071043. The reversal of 1921417071029 is 9201707141291.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1921417071029 - 2⁸ = 1921417070773 is a prime.

It is a super-2 number, since 2×1921417071029² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1921417071229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3089094659 + ... + 3089095280.

It is an arithmetic number, because the mean of its divisors is an integer number (481898815320).

Almost surely, 2^{1921417071029} is an apocalyptic number.

It is an amenable number.

1921417071029 is a deficient number, since it is larger than the sum of its proper divisors (6178190251).

1921417071029 is an equidigital number, since it uses as much as digits as its factorization.

1921417071029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6178190250.

The product of its (nonzero) digits is 63504, while the sum is 44.

The spelling of 1921417071029 in words is "one trillion, nine hundred twenty-one billion, four hundred seventeen million, seventy-one thousand, twenty-nine".