1864621234 has 16 divisors (see below), whose sum is σ = 3384523008. Its totient is φ = 752116032.

The previous prime is 1864621211. The next prime is 1864621273. The reversal of 1864621234 is 4321264681.

It is a junction number, because it is equal to n+sod(n) for n = 1864621193 and 1864621202.

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, 3917034 + ... + 3917509.

It is an arithmetic number, because the mean of its divisors is an integer number (211532688).

Almost surely, 2^1864621234 is an apocalyptic number.

1864621234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1864621234 is a deficient number, since it is larger than the sum of its proper divisors (1519901774).

1864621234 is a wasteful number, since it uses less digits than its factorization.

1864621234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7834569.

The product of its digits is 55296, while the sum is 37.

The square root of 1864621234 is about 43181.2602178306. The cubic root of 1864621234 is about 1230.8266050075.

The spelling of 1864621234 in words is "one billion, eight hundred sixty-four million, six hundred twenty-one thousand, two hundred thirty-four".