1955139934 has 16 divisors (see below), whose sum is σ = 3267392256. Its totient is φ = 869791000.

The previous prime is 1955139911. The next prime is 1955139983. The reversal of 1955139934 is 4399315591.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 944392 + ... + 946459.

It is an arithmetic number, because the mean of its divisors is an integer number (204212016).

Almost surely, 2^1955139934 is an apocalyptic number.

1955139934 is a deficient number, since it is larger than the sum of its proper divisors (1312252322).

1955139934 is a wasteful number, since it uses less digits than its factorization.

1955139934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890911.

The product of its digits is 656100, while the sum is 49.

The square root of 1955139934 is about 44216.9643236620. The cubic root of 1955139934 is about 1250.4297048527.

The spelling of 1955139934 in words is "one billion, nine hundred fifty-five million, one hundred thirty-nine thousand, nine hundred thirty-four".