1897227480 has 32 divisors (see below), whose sum is σ = 5691682800. Its totient is φ = 505927296.

The previous prime is 1897227469. The next prime is 1897227533. The reversal of 1897227480 is 847227981.

It is a super-2 number, since 2×1897227480² = 7198944221734300800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7904995 + ... + 7905234.

Almost surely, 2^1897227480 is an apocalyptic number.

1897227480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1897227480 is an abundant number, since it is smaller than the sum of its proper divisors (3794455320).

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

1897227480 is a wasteful number, since it uses less digits than its factorization.

1897227480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15810243 (or 15810239 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 48.

The square root of 1897227480 is about 43557.1748395141. The cubic root of 1897227480 is about 1237.9595909499.

The spelling of 1897227480 in words is "one billion, eight hundred ninety-seven million, two hundred twenty-seven thousand, four hundred eighty".