1274541990 has 32 divisors (see below), whose sum is σ = 3133511136. Its totient is φ = 331587840.

The previous prime is 1274541979. The next prime is 1274542001. The reversal of 1274541990 is 991454721.

It is an interprime number because it is at equal distance from previous prime (1274541979) and next prime (1274542001).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516877 + ... + 519336.

It is an arithmetic number, because the mean of its divisors is an integer number (97922223).

Almost surely, 2^1274541990 is an apocalyptic number.

1274541990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1274541990 is an abundant number, since it is smaller than the sum of its proper divisors (1858969146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1274541990 is a wasteful number, since it uses less digits than its factorization.

1274541990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036264.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 1274541990 is about 35700.7281438348. The cubic root of 1274541990 is about 1084.2215855572.

The spelling of 1274541990 in words is "one billion, two hundred seventy-four million, five hundred forty-one thousand, nine hundred ninety".