1651064890 has 32 divisors (see below), whose sum is σ = 3106408320. Its totient is φ = 630636864.

The previous prime is 1651064881. The next prime is 1651064893. The reversal of 1651064890 is 984601561.

It is not an unprimeable number, because it can be changed into a prime (1651064893) 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, 136572 + ... + 148168.

It is an arithmetic number, because the mean of its divisors is an integer number (97075260).

Almost surely, 2^1651064890 is an apocalyptic number.

1651064890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1651064890 is a deficient number, since it is larger than the sum of its proper divisors (1455343430).

1651064890 is a wasteful number, since it uses less digits than its factorization.

1651064890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12246.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 1651064890 is about 40633.2977987266. The cubic root of 1651064890 is about 1181.9199067163.

The spelling of 1651064890 in words is "one billion, six hundred fifty-one million, sixty-four thousand, eight hundred ninety".