1452693690 has 240 divisors, whose sum is σ = 4813388712. Its totient is φ = 312367104.

The previous prime is 1452693679. The next prime is 1452693727. The reversal of 1452693690 is 963962541.

1452693690 is a `hidden beast` number, since 1 + 4 + 526 + 9 + 36 + 90 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1028292489 + 424401201 = 32067^2 + 20601^2 .

It is a super-2 number, since 2×1452693690² = 4220637913931632200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 673654 + ... + 675806.

Almost surely, 2^1452693690 is an apocalyptic number.

1452693690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1452693690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2406694356).

1452693690 is an abundant number, since it is smaller than the sum of its proper divisors (3360695022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1452693690 is a wasteful number, since it uses less digits than its factorization.

1452693690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203 (or 2187 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 1452693690 is about 38114.2190002629. The cubic root of 1452693690 is about 1132.5516488878.

The spelling of 1452693690 in words is "one billion, four hundred fifty-two million, six hundred ninety-three thousand, six hundred ninety".