1913734949 has 4 divisors (see below), whose sum is σ = 2187125664. Its totient is φ = 1640344236.

The previous prime is 1913734943. The next prime is 1913734981. The reversal of 1913734949 is 9494373191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1913734949 - 2¹² = 1913730853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1913734897 and 1913734906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913734943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136695347 + ... + 136695360.

It is an arithmetic number, because the mean of its divisors is an integer number (546781416).

Almost surely, 2^1913734949 is an apocalyptic number.

It is an amenable number.

1913734949 is a deficient number, since it is larger than the sum of its proper divisors (273390715).

1913734949 is an equidigital number, since it uses as much as digits as its factorization.

1913734949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273390714.

The product of its digits is 734832, while the sum is 50.

The square root of 1913734949 is about 43746.2563998338. The cubic root of 1913734949 is about 1241.5396563768.

The spelling of 1913734949 in words is "one billion, nine hundred thirteen million, seven hundred thirty-four thousand, nine hundred forty-nine".