1906625484621 has 96 divisors (see below), whose sum is σ = 3341313690624. Its totient is φ = 1031785344000.

The previous prime is 1906625484613. The next prime is 1906625484629. The reversal of 1906625484621 is 1264845266091.

It is a happy number.

1906625484621 is a `hidden beast` number, since 1 + 9 + 0 + 6 + 6 + 2 + 5 + 4 + 8 + 4 + 621 = 666.

It is an interprime number because it is at equal distance from previous prime (1906625484613) and next prime (1906625484629).

It is not a de Polignac number, because 1906625484621 - 2³ = 1906625484613 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906625484629) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 104560921 + ... + 104579153.

It is an arithmetic number, because the mean of its divisors is an integer number (34805350944).

Almost surely, 2^{1906625484621} is an apocalyptic number.

1906625484621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1906625484621 is a deficient number, since it is larger than the sum of its proper divisors (1434688206003).

1906625484621 is a wasteful number, since it uses less digits than its factorization.

1906625484621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20915 (or 20912 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 1906625484621 in words is "one trillion, nine hundred six billion, six hundred twenty-five million, four hundred eighty-four thousand, six hundred twenty-one".