1651475856 has 80 divisors (see below), whose sum is σ = 4309585280. Its totient is φ = 544942080.

The previous prime is 1651475821. The next prime is 1651475857. The reversal of 1651475856 is 6585741561.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1651475857) 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, 3761685 + ... + 3762123.

It is an arithmetic number, because the mean of its divisors is an integer number (53869816).

Almost surely, 2^1651475856 is an apocalyptic number.

1651475856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1651475856 is an abundant number, since it is smaller than the sum of its proper divisors (2658109424).

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

1651475856 is a wasteful number, since it uses less digits than its factorization.

1651475856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064 (or 1058 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 48.

The square root of 1651475856 is about 40638.3544942459. The cubic root of 1651475856 is about 1182.0179623417.

The spelling of 1651475856 in words is "one billion, six hundred fifty-one million, four hundred seventy-five thousand, eight hundred fifty-six".