1611494745 has 32 divisors (see below), whose sum is σ = 2969960448. Its totient is φ = 730876608.

The previous prime is 1611494741. The next prime is 1611494771. The reversal of 1611494745 is 5474941161.

It is not a de Polignac number, because 1611494745 - 2² = 1611494741 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1611494697 and 1611494706.

It is not an unprimeable number, because it can be changed into a prime (1611494741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47089 + ... + 73758.

It is an arithmetic number, because the mean of its divisors is an integer number (92811264).

Almost surely, 2^1611494745 is an apocalyptic number.

1611494745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1611494745 is a deficient number, since it is larger than the sum of its proper divisors (1358465703).

1611494745 is a wasteful number, since it uses less digits than its factorization.

1611494745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120989.

The product of its digits is 120960, while the sum is 42.

The square root of 1611494745 is about 40143.4271705842. The cubic root of 1611494745 is about 1172.4013176874.

The spelling of 1611494745 in words is "one billion, six hundred eleven million, four hundred ninety-four thousand, seven hundred forty-five".