1651665050 has 96 divisors (see below), whose sum is σ = 3608400000. Its totient is φ = 562222080.

The previous prime is 1651665017. The next prime is 1651665053. The reversal of 1651665050 is 505661561.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1651665050.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1651665053) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3309701 + ... + 3310199.

It is an arithmetic number, because the mean of its divisors is an integer number (37587500).

Almost surely, 2^1651665050 is an apocalyptic number.

1651665050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1651665050 is an abundant number, since it is smaller than the sum of its proper divisors (1956734950).

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

1651665050 is a wasteful number, since it uses less digits than its factorization.

1651665050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 1651665050 is about 40640.6822039198. The cubic root of 1651665050 is about 1182.0630981649.

The spelling of 1651665050 in words is "one billion, six hundred fifty-one million, six hundred sixty-five thousand, fifty".