1654648970 has 16 divisors (see below), whose sum is σ = 3207473640. Its totient is φ = 610947264.

The previous prime is 1654648927. The next prime is 1654648979. The reversal of 1654648970 is 798464561.

It can be written as a sum of positive squares in 4 ways, for example, as 998623201 + 656025769 = 31601^2 + 25613^2 .

It is not an unprimeable number, because it can be changed into a prime (1654648979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6363905 + ... + 6364164.

Almost surely, 2^1654648970 is an apocalyptic number.

1654648970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1654648970 is a deficient number, since it is larger than the sum of its proper divisors (1552824670).

1654648970 is a wasteful number, since it uses less digits than its factorization.

1654648970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12728089.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 1654648970 is about 40677.3766361598. The cubic root of 1654648970 is about 1182.7745135464.

The spelling of 1654648970 in words is "one billion, six hundred fifty-four million, six hundred forty-eight thousand, nine hundred seventy".