1611144957 has 8 divisors (see below), whose sum is σ = 2261256160. Its totient is φ = 1017565200.

The previous prime is 1611144949. The next prime is 1611144959. The reversal of 1611144957 is 7594411161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1611144957 - 2³ = 1611144949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611144959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14132794 + ... + 14132907.

It is an arithmetic number, because the mean of its divisors is an integer number (282657020).

Almost surely, 2^1611144957 is an apocalyptic number.

It is an amenable number.

1611144957 is a deficient number, since it is larger than the sum of its proper divisors (650111203).

1611144957 is a wasteful number, since it uses less digits than its factorization.

1611144957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28265723.

The product of its digits is 30240, while the sum is 39.

The square root of 1611144957 is about 40139.0702059726. The cubic root of 1611144957 is about 1172.3164851454.

The spelling of 1611144957 in words is "one billion, six hundred eleven million, one hundred forty-four thousand, nine hundred fifty-seven".