45478031949 has 36 divisors (see below), whose sum is σ = 76758304896. Its totient is φ = 25870855248.

The previous prime is 45478031939. The next prime is 45478031957. The reversal of 45478031949 is 94913087454.

45478031949 is a `hidden beast` number, since 4 + 547 + 8 + 0 + 3 + 1 + 94 + 9 = 666.

It is not a de Polignac number, because 45478031949 - 2²⁷ = 45343814221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45478031895 and 45478031904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45478031909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 132879 + ... + 329564.

It is an arithmetic number, because the mean of its divisors is an integer number (2132175136).

Almost surely, 2^45478031949 is an apocalyptic number.

45478031949 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

45478031949 is a deficient number, since it is larger than the sum of its proper divisors (31280272947).

45478031949 is a wasteful number, since it uses less digits than its factorization.

45478031949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462686 (or 462676 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 45478031949 in words is "forty-five billion, four hundred seventy-eight million, thirty-one thousand, nine hundred forty-nine".