1457905949 has 4 divisors (see below), whose sum is σ = 1465960860. Its totient is φ = 1449851040.

The previous prime is 1457905937. The next prime is 1457905957. The reversal of 1457905949 is 9495097541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 401200900 + 1056705049 = 20030^2 + 32507^2 .

It is a cyclic number.

It is not a de Polignac number, because 1457905949 - 2¹⁶ = 1457840413 is a prime.

It is a super-2 number, since 2×1457905949² = 4250979512259181202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1457905949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1457905919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4027184 + ... + 4027545.

It is an arithmetic number, because the mean of its divisors is an integer number (366490215).

Almost surely, 2^1457905949 is an apocalyptic number.

It is an amenable number.

1457905949 is a deficient number, since it is larger than the sum of its proper divisors (8054911).

1457905949 is an equidigital number, since it uses as much as digits as its factorization.

1457905949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8054910.

The product of its (nonzero) digits is 2041200, while the sum is 53.

The square root of 1457905949 is about 38182.5346068068. The cubic root of 1457905949 is about 1133.9045623164.

The spelling of 1457905949 in words is "one billion, four hundred fifty-seven million, nine hundred five thousand, nine hundred forty-nine".