2154020351 has 12 divisors (see below), whose sum is σ = 2527877952. Its totient is φ = 1829959488.

The previous prime is 2154020333. The next prime is 2154020353. The reversal of 2154020351 is 1530204512.

It is not a de Polignac number, because 2154020351 - 2¹⁸ = 2153758207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154020353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188975 + ... + 200048.

It is an arithmetic number, because the mean of its divisors is an integer number (210656496).

Almost surely, 2^2154020351 is an apocalyptic number.

2154020351 is a deficient number, since it is larger than the sum of its proper divisors (373857601).

2154020351 is a wasteful number, since it uses less digits than its factorization.

2154020351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389150 (or 389143 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2154020351 is about 46411.4247895925. The cubic root of 2154020351 is about 1291.4668631319.

Adding to 2154020351 its reverse (1530204512), we get a palindrome (3684224863).

The spelling of 2154020351 in words is "two billion, one hundred fifty-four million, twenty thousand, three hundred fifty-one".