1912542155 has 4 divisors (see below), whose sum is σ = 2295050592. Its totient is φ = 1530033720.

The previous prime is 1912542139. The next prime is 1912542167. The reversal of 1912542155 is 5512452191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5512452191 = 5861 ⋅940531.

It is not a de Polignac number, because 1912542155 - 2⁴ = 1912542139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191254211 + ... + 191254220.

It is an arithmetic number, because the mean of its divisors is an integer number (573762648).

Almost surely, 2^1912542155 is an apocalyptic number.

1912542155 is a deficient number, since it is larger than the sum of its proper divisors (382508437).

1912542155 is an equidigital number, since it uses as much as digits as its factorization.

1912542155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382508436.

The product of its digits is 18000, while the sum is 35.

The square root of 1912542155 is about 43732.6211768744. The cubic root of 1912542155 is about 1241.2816602120.

The spelling of 1912542155 in words is "one billion, nine hundred twelve million, five hundred forty-two thousand, one hundred fifty-five".