1021949430 has 32 divisors (see below), whose sum is σ = 2453601024. Its totient is φ = 272417376.

The previous prime is 1021949413. The next prime is 1021949479. The reversal of 1021949430 is 349491201.

It is a junction number, because it is equal to n+sod(n) for n = 1021949391 and 1021949400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108489 + ... + 117531.

It is an arithmetic number, because the mean of its divisors is an integer number (76675032).

Almost surely, 2^1021949430 is an apocalyptic number.

1021949430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021949430 is an abundant number, since it is smaller than the sum of its proper divisors (1431651594).

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

1021949430 is a wasteful number, since it uses less digits than its factorization.

1021949430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12820.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1021949430 is about 31967.9437874881. The cubic root of 1021949430 is about 1007.2635891970.

The spelling of 1021949430 in words is "one billion, twenty-one million, nine hundred forty-nine thousand, four hundred thirty".