1655151650 has 24 divisors (see below), whose sum is σ = 3087004800. Its totient is φ = 660249360.

The previous prime is 1655151647. The next prime is 1655151653. The reversal of 1655151650 is 561515561.

It is an interprime number because it is at equal distance from previous prime (1655151647) and next prime (1655151653).

It is a self number, because there is not a number n which added to its sum of digits gives 1655151650.

It is not an unprimeable number, because it can be changed into a prime (1655151653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26750 + ... + 63449.

It is an arithmetic number, because the mean of its divisors is an integer number (128625200).

Almost surely, 2^1655151650 is an apocalyptic number.

1655151650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1655151650 is a deficient number, since it is larger than the sum of its proper divisors (1431853150).

1655151650 is a wasteful number, since it uses less digits than its factorization.

1655151650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90578 (or 90573 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 35.

The square root of 1655151650 is about 40683.5550314866. Note that the first 3 decimals coincide. The cubic root of 1655151650 is about 1182.8942764901.

The spelling of 1655151650 in words is "one billion, six hundred fifty-five million, one hundred fifty-one thousand, six hundred fifty".