1690307616 has 96 divisors (see below), whose sum is σ = 4511662848. Its totient is φ = 554031360.

The previous prime is 1690307573. The next prime is 1690307617. The reversal of 1690307616 is 6167030961.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is not an unprimeable number, because it can be changed into a prime (1690307617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2445831 + ... + 2446521.

It is an arithmetic number, because the mean of its divisors is an integer number (46996488).

Almost surely, 2^1690307616 is an apocalyptic number.

1690307616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1690307616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2255831424).

1690307616 is an abundant number, since it is smaller than the sum of its proper divisors (2821355232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1690307616 is a wasteful number, since it uses less digits than its factorization.

1690307616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094 (or 1086 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 1690307616 is about 41113.3508242760. The cubic root of 1690307616 is about 1191.2106916675.

The spelling of 1690307616 in words is "one billion, six hundred ninety million, three hundred seven thousand, six hundred sixteen".