1845373149 has 24 divisors (see below), whose sum is σ = 2730611520. Its totient is φ = 1200522048.

The previous prime is 1845373139. The next prime is 1845373199. The reversal of 1845373149 is 9413735481.

1845373149 is a `hidden beast` number, since 1 + 84 + 537 + 31 + 4 + 9 = 666.

It is not a de Polignac number, because 1845373149 - 2⁷ = 1845373021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1845373109) 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, 60064 + ... + 85430.

It is an arithmetic number, because the mean of its divisors is an integer number (113775480).

Almost surely, 2^1845373149 is an apocalyptic number.

It is an amenable number.

1845373149 is a deficient number, since it is larger than the sum of its proper divisors (885238371).

1845373149 is a wasteful number, since it uses less digits than its factorization.

1845373149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25569 (or 25566 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 1845373149 is about 42957.8066130011. The cubic root of 1845373149 is about 1226.5767615448.

The spelling of 1845373149 in words is "one billion, eight hundred forty-five million, three hundred seventy-three thousand, one hundred forty-nine".