1662421970 has 16 divisors (see below), whose sum is σ = 3264392448. Its totient is φ = 604517040.

The previous prime is 1662421949. The next prime is 1662421997. The reversal of 1662421970 is 791242661.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7556354 + ... + 7556573.

It is an arithmetic number, because the mean of its divisors is an integer number (204024528).

Almost surely, 2^1662421970 is an apocalyptic number.

1662421970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1662421970 is a deficient number, since it is larger than the sum of its proper divisors (1601970478).

1662421970 is a wasteful number, since it uses less digits than its factorization.

1662421970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15112945.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1662421970 is about 40772.8091992691. The cubic root of 1662421970 is about 1184.6237169268.

The spelling of 1662421970 in words is "one billion, six hundred sixty-two million, four hundred twenty-one thousand, nine hundred seventy".