1452623989 has 2 divisors, whose sum is σ = 1452623990. Its totient is φ = 1452623988.

The previous prime is 1452623983. The next prime is 1452623993. The reversal of 1452623989 is 9893262541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 835499025 + 617124964 = 28905^2 + 24842^2 .

It is a cyclic number.

It is not a de Polignac number, because 1452623989 - 2³ = 1452623981 is a prime.

It is a super-2 number, since 2×1452623989² = 4220232906836544242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1452623981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 726311994 + 726311995.

It is an arithmetic number, because the mean of its divisors is an integer number (726311995).

Almost surely, 2^1452623989 is an apocalyptic number.

It is an amenable number.

1452623989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1452623989 is an equidigital number, since it uses as much as digits as its factorization.

1452623989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 49.

The square root of 1452623989 is about 38113.3046192534. The cubic root of 1452623989 is about 1132.5335351254.

The spelling of 1452623989 in words is "one billion, four hundred fifty-two million, six hundred twenty-three thousand, nine hundred eighty-nine".