1421923650 has 192 divisors, whose sum is σ = 4258656000. Its totient is φ = 313474560.

The previous prime is 1421923637. The next prime is 1421923693. The reversal of 1421923650 is 563291241.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1491574 + ... + 1492526.

It is an arithmetic number, because the mean of its divisors is an integer number (22180500).

Almost surely, 2^1421923650 is an apocalyptic number.

1421923650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421923650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2129328000).

1421923650 is an abundant number, since it is smaller than the sum of its proper divisors (2836732350).

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

1421923650 is a wasteful number, since it uses less digits than its factorization.

1421923650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018 (or 999 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1421923650 is about 37708.4029096964. The cubic root of 1421923650 is about 1124.4981860723.

The spelling of 1421923650 in words is "one billion, four hundred twenty-one million, nine hundred twenty-three thousand, six hundred fifty".