1491948125 has 10 divisors (see below), whose sum is σ = 1864339158. Its totient is φ = 1193558000.

The previous prime is 1491948091. The next prime is 1491948149. The reversal of 1491948125 is 5218491941.

It can be written as a sum of positive squares in 5 ways, for example, as 1145280964 + 346667161 = 33842^2 + 18619^2 .

It is not a de Polignac number, because 1491948125 - 2¹⁸ = 1491685981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 1192934 + ... + 1194183.

Almost surely, 2^1491948125 is an apocalyptic number.

It is an amenable number.

1491948125 is a deficient number, since it is larger than the sum of its proper divisors (372391033).

1491948125 is an frugal number, since it uses more digits than its factorization.

1491948125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387137 (or 2387122 counting only the distinct ones).

The product of its digits is 103680, while the sum is 44.

The square root of 1491948125 is about 38625.7443293977. The cubic root of 1491948125 is about 1142.6623230973.

The spelling of 1491948125 in words is "one billion, four hundred ninety-one million, nine hundred forty-eight thousand, one hundred twenty-five".