1670668537 has 16 divisors (see below), whose sum is σ = 1784473600. Its totient is φ = 1559535120.

The previous prime is 1670668529. The next prime is 1670668541. The reversal of 1670668537 is 7358660761.

It is a cyclic number.

It is not a de Polignac number, because 1670668537 - 2³ = 1670668529 is a prime.

It is a super-2 number, since 2×1670668537² = 5582266721043440738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1670668507) 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, 1090462 + ... + 1091992.

It is an arithmetic number, because the mean of its divisors is an integer number (111529600).

Almost surely, 2^1670668537 is an apocalyptic number.

It is an amenable number.

1670668537 is a deficient number, since it is larger than the sum of its proper divisors (113805063).

1670668537 is a wasteful number, since it uses less digits than its factorization.

1670668537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The square root of 1670668537 is about 40873.8123619513. The cubic root of 1670668537 is about 1186.5792913808.

The spelling of 1670668537 in words is "one billion, six hundred seventy million, six hundred sixty-eight thousand, five hundred thirty-seven".