1452157749 has 24 divisors (see below), whose sum is σ = 2398968000. Its totient is φ = 829196928.

The previous prime is 1452157717. The next prime is 1452157801. The reversal of 1452157749 is 9477512541.

1452157749 is a `hidden beast` number, since 1 + 4 + 521 + 57 + 74 + 9 = 666.

It is not a de Polignac number, because 1452157749 - 2⁵ = 1452157717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1452157349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86749 + ... + 102125.

It is an arithmetic number, because the mean of its divisors is an integer number (99957000).

Almost surely, 2^1452157749 is an apocalyptic number.

It is an amenable number.

1452157749 is a deficient number, since it is larger than the sum of its proper divisors (946810251).

1452157749 is a wasteful number, since it uses less digits than its factorization.

1452157749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16889 (or 16886 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 1452157749 is about 38107.1876291075. The cubic root of 1452157749 is about 1132.4123546633.

It can be divided in two parts, 1452 and 157749, that added together give a square (159201 = 399²).

The spelling of 1452157749 in words is "one billion, four hundred fifty-two million, one hundred fifty-seven thousand, seven hundred forty-nine".