1421923653 has 40 divisors (see below), whose sum is σ = 2296425120. Its totient is φ = 873750240.

The previous prime is 1421923637. The next prime is 1421923693. The reversal of 1421923653 is 3563291241.

It is not a de Polignac number, because 1421923653 - 2⁴ = 1421923637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421923693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 44458 + ... + 69428.

It is an arithmetic number, because the mean of its divisors is an integer number (57410628).

Almost surely, 2^1421923653 is an apocalyptic number.

It is an amenable number.

1421923653 is a deficient number, since it is larger than the sum of its proper divisors (874501467).

1421923653 is a wasteful number, since it uses less digits than its factorization.

1421923653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25039 (or 25030 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 1421923653 is about 37708.4029494753. The cubic root of 1421923653 is about 1124.4981868631.

The spelling of 1421923653 in words is "one billion, four hundred twenty-one million, nine hundred twenty-three thousand, six hundred fifty-three".