1653402163 has 4 divisors (see below), whose sum is σ = 1889602480. Its totient is φ = 1417201848.

The previous prime is 1653402137. The next prime is 1653402181. The reversal of 1653402163 is 3612043561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3612043561 = 7 ⋅516006223.

It is a cyclic number.

It is not a de Polignac number, because 1653402163 - 2¹³ = 1653393971 is a prime.

It is a super-2 number, since 2×1653402163² = 5467477425226157138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1653402193) 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, 118100148 + ... + 118100161.

It is an arithmetic number, because the mean of its divisors is an integer number (472400620).

Almost surely, 2^1653402163 is an apocalyptic number.

1653402163 is a deficient number, since it is larger than the sum of its proper divisors (236200317).

1653402163 is an equidigital number, since it uses as much as digits as its factorization.

1653402163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236200316.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1653402163 is about 40662.0481899277. The cubic root of 1653402163 is about 1182.4773584545.

The spelling of 1653402163 in words is "one billion, six hundred fifty-three million, four hundred two thousand, one hundred sixty-three".