1544790149 has 4 divisors (see below), whose sum is σ = 1765474464. Its totient is φ = 1324105836.

The previous prime is 1544790133. The next prime is 1544790167. The reversal of 1544790149 is 9410974451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1544790149 - 2⁴ = 1544790133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1544790199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110342147 + ... + 110342160.

It is an arithmetic number, because the mean of its divisors is an integer number (441368616).

Almost surely, 2^1544790149 is an apocalyptic number.

It is an amenable number.

1544790149 is a deficient number, since it is larger than the sum of its proper divisors (220684315).

1544790149 is an equidigital number, since it uses as much as digits as its factorization.

1544790149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220684314.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 1544790149 is about 39303.8185040589. The cubic root of 1544790149 is about 1155.9964412533.

The spelling of 1544790149 in words is "one billion, five hundred forty-four million, seven hundred ninety thousand, one hundred forty-nine".