1951444845 has 96 divisors (see below), whose sum is σ = 4063507200. Its totient is φ = 885935232.

The previous prime is 1951444843. The next prime is 1951444853. The reversal of 1951444845 is 5484441591.

1951444845 is a `hidden beast` number, since 19 + 514 + 44 + 84 + 5 = 666.

It is not a de Polignac number, because 1951444845 - 2¹ = 1951444843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1951444845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1951444843) 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 95 ways as a sum of consecutive naturals, for example, 1037616 + ... + 1039494.

It is an arithmetic number, because the mean of its divisors is an integer number (42328200).

Almost surely, 2^1951444845 is an apocalyptic number.

1951444845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1951444845 is an abundant number, since it is smaller than the sum of its proper divisors (2112062355).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1951444845 is a wasteful number, since it uses less digits than its factorization.

1951444845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064 (or 2051 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 1951444845 is about 44175.1609504708. The cubic root of 1951444845 is about 1249.6414641048.

The spelling of 1951444845 in words is "one billion, nine hundred fifty-one million, four hundred forty-four thousand, eight hundred forty-five".