3428215491 has 4 divisors (see below), whose sum is σ = 4570953992. Its totient is φ = 2285476992.

The previous prime is 3428215489. The next prime is 3428215493. The reversal of 3428215491 is 1945128243.

3428215491 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1945128243 = 3 ⋅648376081.

It is an interprime number because it is at equal distance from previous prime (3428215489) and next prime (3428215493).

It is not a de Polignac number, because 3428215491 - 2¹ = 3428215489 is a prime.

It is a super-2 number, since 2×3428215491² = 23505322905464742162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3428215493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571369246 + ... + 571369251.

It is an arithmetic number, because the mean of its divisors is an integer number (1142738498).

Almost surely, 2^3428215491 is an apocalyptic number.

3428215491 is a deficient number, since it is larger than the sum of its proper divisors (1142738501).

3428215491 is a wasteful number, since it uses less digits than its factorization.

3428215491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142738500.

The product of its digits is 69120, while the sum is 39.

The square root of 3428215491 is about 58550.9649023823. The cubic root of 3428215491 is about 1507.8426996873.

The spelling of 3428215491 in words is "three billion, four hundred twenty-eight million, two hundred fifteen thousand, four hundred ninety-one".