1616903279 has 4 divisors (see below), whose sum is σ = 1627202184. Its totient is φ = 1606604376.

The previous prime is 1616903273. The next prime is 1616903291. The reversal of 1616903279 is 9723096161.

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

It is a cyclic number.

It is not a de Polignac number, because 1616903279 - 2¹⁶ = 1616837743 is a prime.

It is a super-2 number, since 2×1616903279² = 5228752427281903682, 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 (1616903273) 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, 5149217 + ... + 5149530.

It is an arithmetic number, because the mean of its divisors is an integer number (406800546).

Almost surely, 2^1616903279 is an apocalyptic number.

1616903279 is a deficient number, since it is larger than the sum of its proper divisors (10298905).

1616903279 is a wasteful number, since it uses less digits than its factorization.

1616903279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10298904.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 1616903279 is about 40210.7358674272. The cubic root of 1616903279 is about 1173.7114660661.

The spelling of 1616903279 in words is "one billion, six hundred sixteen million, nine hundred three thousand, two hundred seventy-nine".