3070378921 has 3 divisors (see below), whose sum is σ = 3070434333. Its totient is φ = 3070323510.

The previous prime is 3070378897. The next prime is 3070378943. The reversal of 3070378921 is 1298730703.

The square root of 3070378921 is 55411.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1298730703 = 21911 ⋅59273.

It is not a de Polignac number, because 3070378921 - 2⁵ = 3070378889 is a prime.

It is a super-2 number, since 2×3070378921² = 18854453437042248482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3070378981) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 27706 + ... + 83116.

It is an arithmetic number, because the mean of its divisors is an integer number (1023478111).

Almost surely, 2^3070378921 is an apocalyptic number.

3070378921 is the 55411-st square number.

3070378921 is the 27706-th centered octagonal number.

It is an amenable number.

3070378921 is a deficient number, since it is larger than the sum of its proper divisors (55412).

3070378921 is an frugal number, since it uses more digits than its factorization.

3070378921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110822 (or 55411 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The cubic root of 3070378921 is about 1453.4407264941.

Multiplying 3070378921 by its product of nonzero digits (63504), we get a square (194981342999184 = 13963572²).

The spelling of 3070378921 in words is "three billion, seventy million, three hundred seventy-eight thousand, nine hundred twenty-one".