1613646406 has 8 divisors (see below), whose sum is σ = 2423747160. Its totient is φ = 805730688.

The previous prime is 1613646403. The next prime is 1613646407. The reversal of 1613646406 is 6046463161.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1613646403) 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, 544411 + ... + 547366.

It is an arithmetic number, because the mean of its divisors is an integer number (302968395).

Almost surely, 2^1613646406 is an apocalyptic number.

1613646406 is a deficient number, since it is larger than the sum of its proper divisors (810100754).

1613646406 is a wasteful number, since it uses less digits than its factorization.

1613646406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092518.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 1613646406 is about 40170.2178983386. The cubic root of 1613646406 is about 1172.9228807280.

The spelling of 1613646406 in words is "one billion, six hundred thirteen million, six hundred forty-six thousand, four hundred six".