1861414420 has 24 divisors (see below), whose sum is σ = 4114706400. Its totient is φ = 705377952.

The previous prime is 1861414417. The next prime is 1861414421. The reversal of 1861414420 is 244141681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1861414421) 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, 2448850 + ... + 2449609.

It is an arithmetic number, because the mean of its divisors is an integer number (171446100).

Almost surely, 2^1861414420 is an apocalyptic number.

1861414420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1861414420 is an abundant number, since it is smaller than the sum of its proper divisors (2253291980).

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

1861414420 is a wasteful number, since it uses less digits than its factorization.

1861414420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4898487 (or 4898485 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 1861414420 is about 43144.1122286692. The cubic root of 1861414420 is about 1230.1205998038.

The spelling of 1861414420 in words is "one billion, eight hundred sixty-one million, four hundred fourteen thousand, four hundred twenty".