4921297920 has 1056 divisors, whose sum is σ = 22685345280. Its totient is φ = 955514880.

The previous prime is 4921297907. The next prime is 4921297943. The reversal of 4921297920 is 297921294.

4921297920 = T₁₆₅ + T₁₆₆ + ... + T₃₀₉₀.

It is a tau number, because it is divible by the number of its divisors (1056).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 67415004 + ... + 67415076.

Almost surely, 2^4921297920 is an apocalyptic number.

4921297920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4921297920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11342672640).

4921297920 is an abundant number, since it is smaller than the sum of its proper divisors (17764047360).

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

4921297920 is a wasteful number, since it uses less digits than its factorization.

4921297920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 4921297920 is about 70151.9630516495. The cubic root of 4921297920 is about 1700.9565458739.

The spelling of 4921297920 in words is "four billion, nine hundred twenty-one million, two hundred ninety-seven thousand, nine hundred twenty".