1897225305 has 8 divisors (see below), whose sum is σ = 3035560512. Its totient is φ = 1011853488.

The previous prime is 1897225303. The next prime is 1897225307. The reversal of 1897225305 is 5035227981.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1897225303) and next prime (1897225307).

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

It is not a de Polignac number, because 1897225305 - 2¹ = 1897225303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1897225301) 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, 63240829 + ... + 63240858.

It is an arithmetic number, because the mean of its divisors is an integer number (379445064).

Almost surely, 2^1897225305 is an apocalyptic number.

1897225305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1897225305 is a deficient number, since it is larger than the sum of its proper divisors (1138335207).

1897225305 is a wasteful number, since it uses less digits than its factorization.

1897225305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126481695.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 1897225305 is about 43557.1498723229. The cubic root of 1897225305 is about 1237.9591178801.

The spelling of 1897225305 in words is "one billion, eight hundred ninety-seven million, two hundred twenty-five thousand, three hundred five".