1670400370 has 8 divisors (see below), whose sum is σ = 3006720684. Its totient is φ = 668160144.

The previous prime is 1670400367. The next prime is 1670400379. The reversal of 1670400370 is 730040761.

It can be written as a sum of positive squares in 2 ways, for example, as 1595283481 + 75116889 = 39941^2 + 8667^2 .

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

It is a super-2 number, since 2×1670400370² = 5580474792192273800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1670400379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83520009 + ... + 83520028.

Almost surely, 2^1670400370 is an apocalyptic number.

1670400370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1670400370 is a deficient number, since it is larger than the sum of its proper divisors (1336320314).

1670400370 is a wasteful number, since it uses less digits than its factorization.

1670400370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167040044.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 1670400370 is about 40870.5318047123. The cubic root of 1670400370 is about 1186.5158001439.

The spelling of 1670400370 in words is "one billion, six hundred seventy million, four hundred thousand, three hundred seventy".