1452966778 has 8 divisors (see below), whose sum is σ = 2307653172. Its totient is φ = 683749056.

The previous prime is 1452966773. The next prime is 1452966793. The reversal of 1452966778 is 8776692541.

It can be written as a sum of positive squares in 2 ways, for example, as 1180815769 + 272151009 = 34363^2 + 16497^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1452966778² = 4222224915943402568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1452966773) 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, 21367125 + ... + 21367192.

Almost surely, 2^1452966778 is an apocalyptic number.

1452966778 is a deficient number, since it is larger than the sum of its proper divisors (854686394).

1452966778 is a wasteful number, since it uses less digits than its factorization.

1452966778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42734336.

The product of its digits is 5080320, while the sum is 55.

The square root of 1452966778 is about 38117.8013269391. The cubic root of 1452966778 is about 1132.6226128927.

The spelling of 1452966778 in words is "one billion, four hundred fifty-two million, nine hundred sixty-six thousand, seven hundred seventy-eight".