1954838739 has 32 divisors (see below), whose sum is σ = 3022516224. Its totient is φ = 1100764800.

The previous prime is 1954838663. The next prime is 1954838741. The reversal of 1954838739 is 9378384591.

It is not a de Polignac number, because 1954838739 - 2⁹ = 1954838227 is a prime.

It is a super-2 number, since 2×1954838739² = 7642788990990220242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1954838759) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 470917 + ... + 475049.

It is an arithmetic number, because the mean of its divisors is an integer number (94453632).

Almost surely, 2^1954838739 is an apocalyptic number.

1954838739 is a deficient number, since it is larger than the sum of its proper divisors (1067677485).

1954838739 is a wasteful number, since it uses less digits than its factorization.

1954838739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4467.

The product of its digits is 6531840, while the sum is 57.

The square root of 1954838739 is about 44213.5583164260. The cubic root of 1954838739 is about 1250.3654907761.

The spelling of 1954838739 in words is "one billion, nine hundred fifty-four million, eight hundred thirty-eight thousand, seven hundred thirty-nine".