1670616400 has 30 divisors (see below), whose sum is σ = 4013656862. Its totient is φ = 668246400.

The previous prime is 1670616371. The next prime is 1670616403. The reversal of 1670616400 is 46160761.

It can be written as a sum of positive squares in 3 ways, for example, as 242985744 + 1427630656 = 15588^2 + 37784^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670616403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2087871 + ... + 2088670.

Almost surely, 2^1670616400 is an apocalyptic number.

1670616400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1670616400 is an abundant number, since it is smaller than the sum of its proper divisors (2343040462).

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

1670616400 is a wasteful number, since it uses less digits than its factorization.

1670616400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4176559 (or 4176548 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1670616400 is about 40873.1745769765. The cubic root of 1670616400 is about 1186.5669479533.

The spelling of 1670616400 in words is "one billion, six hundred seventy million, six hundred sixteen thousand, four hundred".