1653426020 has 24 divisors (see below), whose sum is σ = 3473576568. Its totient is φ = 661107200.

The previous prime is 1653426007. The next prime is 1653426023. The reversal of 1653426020 is 206243561.

It can be written as a sum of positive squares in 4 ways, for example, as 223981156 + 1429444864 = 14966^2 + 37808^2 .

It is a super-2 number, since 2×1653426020² = 5467635207226080800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1653426023) 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, 39740 + ... + 69900.

It is an arithmetic number, because the mean of its divisors is an integer number (144732357).

Almost surely, 2^1653426020 is an apocalyptic number.

1653426020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1653426020 is an abundant number, since it is smaller than the sum of its proper divisors (1820150548).

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

1653426020 is a wasteful number, since it uses less digits than its factorization.

1653426020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32911 (or 32909 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1653426020 is about 40662.3415459563. The cubic root of 1653426020 is about 1182.4830457635.

Adding to 1653426020 its reverse (206243561), we get a palindrome (1859669581).

The spelling of 1653426020 in words is "one billion, six hundred fifty-three million, four hundred twenty-six thousand, twenty".