1492749145 has 4 divisors (see below), whose sum is σ = 1791298980. Its totient is φ = 1194199312.

The previous prime is 1492749143. The next prime is 1492749149. The reversal of 1492749145 is 5419472941.

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 540841536 + 951907609 = 23256^2 + 30853^2 .

It is a cyclic number.

It is not a de Polignac number, because 1492749145 - 2¹ = 1492749143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1492749095 and 1492749104.

It is not an unprimeable number, because it can be changed into a prime (1492749143) 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, 149274910 + ... + 149274919.

It is an arithmetic number, because the mean of its divisors is an integer number (447824745).

Almost surely, 2^1492749145 is an apocalyptic number.

It is an amenable number.

1492749145 is a deficient number, since it is larger than the sum of its proper divisors (298549835).

1492749145 is an equidigital number, since it uses as much as digits as its factorization.

1492749145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298549834.

The product of its digits is 362880, while the sum is 46.

The square root of 1492749145 is about 38636.1119291266. Note that the first 3 decimals coincide. The cubic root of 1492749145 is about 1142.8667832037.

The spelling of 1492749145 in words is "one billion, four hundred ninety-two million, seven hundred forty-nine thousand, one hundred forty-five".