1334147621 has 4 divisors (see below), whose sum is σ = 1334364492. Its totient is φ = 1333930752.

The previous prime is 1334147611. The next prime is 1334147629. The reversal of 1334147621 is 1267414331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1267414331 = 277 ⋅4575503.

It can be written as a sum of positive squares in 2 ways, for example, as 227587396 + 1106560225 = 15086^2 + 33265^2 .

It is a cyclic number.

It is not a de Polignac number, because 1334147621 - 2⁶ = 1334147557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1334147629) 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, 98930 + ... + 111603.

It is an arithmetic number, because the mean of its divisors is an integer number (333591123).

Almost surely, 2^1334147621 is an apocalyptic number.

It is an amenable number.

1334147621 is a deficient number, since it is larger than the sum of its proper divisors (216871).

1334147621 is an equidigital number, since it uses as much as digits as its factorization.

1334147621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216870.

The product of its digits is 12096, while the sum is 32.

The square root of 1334147621 is about 36525.9855582296. The cubic root of 1334147621 is about 1100.8664305876.

The spelling of 1334147621 in words is "one billion, three hundred thirty-four million, one hundred forty-seven thousand, six hundred twenty-one".