1954309545 has 64 divisors (see below), whose sum is σ = 3748343040. Its totient is φ = 962417664.

The previous prime is 1954309529. The next prime is 1954309589. The reversal of 1954309545 is 5459034591.

1954309545 is a `hidden beast` number, since 1 + 95 + 430 + 95 + 45 = 666.

It is not a de Polignac number, because 1954309545 - 2⁴ = 1954309529 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1954309545.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 113602 + ... + 129668.

It is an arithmetic number, because the mean of its divisors is an integer number (58567860).

Almost surely, 2^1954309545 is an apocalyptic number.

1954309545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1954309545 is a deficient number, since it is larger than the sum of its proper divisors (1794033495).

1954309545 is a wasteful number, since it uses less digits than its factorization.

1954309545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16151 (or 16145 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The square root of 1954309545 is about 44207.5733896354. The cubic root of 1954309545 is about 1250.2526518635.

The spelling of 1954309545 in words is "one billion, nine hundred fifty-four million, three hundred nine thousand, five hundred forty-five".