1210400653 has 16 divisors (see below), whose sum is σ = 1510104960. Its totient is φ = 942523200.

The previous prime is 1210400651. The next prime is 1210400657. The reversal of 1210400653 is 3560040121.

It is a cyclic number.

It is not a de Polignac number, because 1210400653 - 2¹ = 1210400651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210400651) 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, 129543 + ... + 138571.

It is an arithmetic number, because the mean of its divisors is an integer number (94381560).

Almost surely, 2^1210400653 is an apocalyptic number.

It is an amenable number.

1210400653 is a deficient number, since it is larger than the sum of its proper divisors (299704307).

1210400653 is a wasteful number, since it uses less digits than its factorization.

1210400653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10788.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1210400653 is about 34790.8127671660. The cubic root of 1210400653 is about 1065.7198372127.

Adding to 1210400653 its reverse (3560040121), we get a palindrome (4770440774).

The spelling of 1210400653 in words is "one billion, two hundred ten million, four hundred thousand, six hundred fifty-three".