1616381078 has 8 divisors (see below), whose sum is σ = 2611077168. Its totient is φ = 746022024.

The previous prime is 1616381059. The next prime is 1616381113. The reversal of 1616381078 is 8701836161.

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

It is a super-2 number, since 2×1616381078² = 5225375578632884168, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31084226 + ... + 31084277.

It is an arithmetic number, because the mean of its divisors is an integer number (326384646).

Almost surely, 2^1616381078 is an apocalyptic number.

1616381078 is a deficient number, since it is larger than the sum of its proper divisors (994696090).

1616381078 is a wasteful number, since it uses less digits than its factorization.

1616381078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62168518.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 1616381078 is about 40204.2420398644. The cubic root of 1616381078 is about 1173.5850970775.

The spelling of 1616381078 in words is "one billion, six hundred sixteen million, three hundred eighty-one thousand, seventy-eight".