1611401357 has 4 divisors (see below), whose sum is σ = 1625661660. Its totient is φ = 1597141056.

The previous prime is 1611401353. The next prime is 1611401431. The reversal of 1611401357 is 7531041161.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 669463876 + 941937481 = 25874^2 + 30691^2 .

It is a cyclic number.

It is not a de Polignac number, because 1611401357 - 2² = 1611401353 is a prime.

It is a super-2 number, since 2×1611401357² = 5193228666682882898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611401353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7129982 + ... + 7130207.

It is an arithmetic number, because the mean of its divisors is an integer number (406415415).

Almost surely, 2^1611401357 is an apocalyptic number.

It is an amenable number.

1611401357 is a deficient number, since it is larger than the sum of its proper divisors (14260303).

1611401357 is a wasteful number, since it uses less digits than its factorization.

1611401357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14260302.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 1611401357 is about 40142.2639745194. The cubic root of 1611401357 is about 1172.3786699086.

The spelling of 1611401357 in words is "one billion, six hundred eleven million, four hundred one thousand, three hundred fifty-seven".