1421602653 has 16 divisors (see below), whose sum is σ = 1979781120. Its totient is φ = 905658864.

The previous prime is 1421602643. The next prime is 1421602691. The reversal of 1421602653 is 3562061241.

It is not a de Polignac number, because 1421602653 - 2¹⁴ = 1421586269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1421602653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421602643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66768 + ... + 85446.

It is an arithmetic number, because the mean of its divisors is an integer number (123736320).

Almost surely, 2^1421602653 is an apocalyptic number.

It is an amenable number.

1421602653 is a deficient number, since it is larger than the sum of its proper divisors (558178467).

1421602653 is a wasteful number, since it uses less digits than its factorization.

1421602653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19808.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1421602653 is about 37704.1463634969. The cubic root of 1421602653 is about 1124.4135618124.

Adding to 1421602653 its reverse (3562061241), we get a palindrome (4983663894).

The spelling of 1421602653 in words is "one billion, four hundred twenty-one million, six hundred two thousand, six hundred fifty-three".