1649225501 has 8 divisors (see below), whose sum is σ = 2056177344. Its totient is φ = 1285110720.

The previous prime is 1649225489. The next prime is 1649225503. The reversal of 1649225501 is 1055229461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1649225501 - 2¹⁰ = 1649224477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649225503) 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, 10709180 + ... + 10709333.

It is an arithmetic number, because the mean of its divisors is an integer number (257022168).

Almost surely, 2^1649225501 is an apocalyptic number.

1649225501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1649225501 is a deficient number, since it is larger than the sum of its proper divisors (406951843).

1649225501 is a wasteful number, since it uses less digits than its factorization.

1649225501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21418531.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 1649225501 is about 40610.6574805186. The cubic root of 1649225501 is about 1181.4808328563.

The spelling of 1649225501 in words is "one billion, six hundred forty-nine million, two hundred twenty-five thousand, five hundred one".