1654490720 has 24 divisors (see below), whose sum is σ = 3908734704. Its totient is φ = 661796224.

The previous prime is 1654490713. The next prime is 1654490741. The reversal of 1654490720 is 270944561.

It is a super-2 number, since 2×1654490720² = 5474679085132236800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 5170124 + ... + 5170443.

It is an arithmetic number, because the mean of its divisors is an integer number (162863946).

Almost surely, 2^1654490720 is an apocalyptic number.

1654490720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1654490720 is an abundant number, since it is smaller than the sum of its proper divisors (2254243984).

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

1654490720 is a wasteful number, since it uses less digits than its factorization.

1654490720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10340582 (or 10340574 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 1654490720 is about 40675.4314052107. The cubic root of 1654490720 is about 1182.7368056423.

The spelling of 1654490720 in words is "one billion, six hundred fifty-four million, four hundred ninety thousand, seven hundred twenty".