1421764153 has 2 divisors, whose sum is σ = 1421764154. Its totient is φ = 1421764152.

The previous prime is 1421764139. The next prime is 1421764177. The reversal of 1421764153 is 3514671241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1410528249 + 11235904 = 37557^2 + 3352^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421764153 - 2⁹ = 1421763641 is a prime.

It is a super-4 number, since 4×1421764153⁴ (a number of 38 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (1421764453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710882076 + 710882077.

It is an arithmetic number, because the mean of its divisors is an integer number (710882077).

Almost surely, 2^1421764153 is an apocalyptic number.

It is an amenable number.

1421764153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421764153 is an equidigital number, since it uses as much as digits as its factorization.

1421764153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 1421764153 is about 37706.2879769409. The cubic root of 1421764153 is about 1124.4561395593.

The spelling of 1421764153 in words is "one billion, four hundred twenty-one million, seven hundred sixty-four thousand, one hundred fifty-three".